FREE! Click here to Join FunTrivia. Thousands of games, quizzes, and lots more!
MLB Players Numbers Quizzes, Trivia and Puzzles
MLB Players Numbers Quizzes, Trivia

MLB Players Numbers Trivia

MLB Players Numbers Trivia Quizzes

  1. Home
  2. »
  3. Quizzes
  4. »
  5. Sports Trivia
  6. »
  7. MLB Players

Fun Trivia
28 quizzes and 305 trivia questions.
1.
  National League Retired Numbers   best quiz  
Multiple Choice
 10 Qns
All multiple choice to see if you can find who the retired number belongs to. I hope that you enjoy it. :-)
Average, 10 Qns, Nightmare, Sep 10 08
Average
Nightmare gold member
1264 plays
2.
  All in the Numbers   great trivia quiz  
Multiple Choice
 10 Qns
An easy all multiple choice quiz on some baseball great's jersey numbers. I hope that you enjoy it.
Average, 10 Qns, Nightmare, Jul 19 04
Average
Nightmare gold member
1966 plays
3.
  My Number Is Unlisted!   great trivia quiz  
Match Quiz
 10 Qns
Try and match the person with the information given about jersey numbers that were retired in their honor. Have fun.
Easier, 10 Qns, dg_dave, Nov 30 16
Easier
dg_dave gold member
351 plays
4.
  American League Retired Numbers   top quiz  
Multiple Choice
 10 Qns
All multiple choice to see if you can identify some of these greats. I hope that you have fun with it. :-)
Easier, 10 Qns, Nightmare, Sep 08 08
Easier
Nightmare gold member
593 plays
5.
  Don't Even Think About It   top quiz  
Multiple Choice
 10 Qns
Don't even think about wearing my number on my former team! This is an all multiple choice quiz about some baseball greats whose jersey numbers are retired with certain teams. I hope that you have fun with it. :-)
Average, 10 Qns, Nightmare, May 31 07
Average
Nightmare gold member
1352 plays
6.
  Baseball by the Uniform Number [2]   best quiz  
Multiple Choice
 10 Qns
This quiz is a follow-up to Baseball by the Uniform Number [1]. It is 10 questions about some of the superstars from baseball history who wore particular uniform numbers.
Easier, 10 Qns, Berrigan, Aug 14 09
Easier
Berrigan
662 plays
7.
  You Can Count on That!   best quiz  
Multiple Choice
 10 Qns
You just add the two jersey numbers together, and figure out who the total number belongs to in all multiple choice. Have fun with it! :)
Average, 10 Qns, Nightmare, Aug 10 10
Average
Nightmare gold member
678 plays
8.
  Watch My Back   best quiz  
Multiple Choice
 10 Qns
An all multiple choice quiz to see if you remember some jersey numbers of many baseball greats. I hope there is some education in it for you! :-)
Average, 10 Qns, Nightmare, Feb 07 07
Average
Nightmare gold member
1288 plays
9.
  Baseball by the Uniform Number [3]   great trivia quiz  
Multiple Choice
 10 Qns
This is the third installment of my "Baseball by the Uniform Number" series. It will involve players who wore #21-#30. I hope you enjoy!
Very Easy, 10 Qns, Berrigan, Aug 17 09
Very Easy
Berrigan
487 plays
10.
  Baseball by the Uniform Number [1]   great trivia quiz  
Multiple Choice
 10 Qns
This quiz will count baseball uniform numbers from 1-10 (most of them have been retired by their team). Can you identify the superstar from baseball history who wore this uniform number?
Very Easy, 10 Qns, Berrigan, Aug 14 09
Very Easy
Berrigan
575 plays
trivia question Quick Question
Hall of Famer Ted Williams wore which number with the Red Sox (his number was later retired)?

From Quiz "MLB Retired Numbers"




11.
  Well Known 2022 MLB Jersey Numbers    
Classification Quiz
 20 Qns
Jersey numbers in baseball can be just as famous as the people who wear them. Categorize the following MLB players by the numbers they wore. Have fun, and good luck!
Average, 20 Qns, jddrsi_raven, Jan 21 22
Average
jddrsi_raven gold member
Jan 21 22
106 plays
12.
  What's in a Number?   top quiz  
Multiple Choice
 10 Qns
See if you can identify these baseball greats who have had their jersey number retired by a team to honor them. Have fun! :)
Average, 10 Qns, Nightmare, Sep 08 09
Average
Nightmare gold member
435 plays
13.
  What do you know about I've Got Your Number!?   popular trivia quiz  
Multiple Choice
 10 Qns
A short and sweet look at some Hall of Fame greats to see if you know what number they wore. Have fun.
Average, 10 Qns, dg_dave, Aug 20 15
Average
dg_dave gold member
191 plays
14.
  It's All in the Numbers!   popular trivia quiz  
Multiple Choice
 10 Qns
Let's see if you can figure out some math numbers with jerseys from Major League players. I hope that you have fun with it. :)
Average, 10 Qns, Nightmare, Aug 16 10
Average
Nightmare gold member
200 plays
15.
  Hey, Watch My Back!   popular trivia quiz  
Multiple Choice
 10 Qns
All multiple choice about which jersey number that some baseball greats wore. I hope that you have fun with it. :-)
Average, 10 Qns, Nightmare, Apr 03 09
Average
Nightmare gold member
443 plays
16.
  MLB Retired Numbers    
Multiple Choice
 10 Qns
See if you can match the retired number with the famous MLB player!
Easier, 10 Qns, calboneds, Oct 26 05
Easier
calboneds
812 plays
17.
  Retired MLB Jersey Numbers   popular trivia quiz  
Multiple Choice
 10 Qns
See if you can answer these 10 questions pertaining to jersey numbers retired by Major League Baseball teams.
Easier, 10 Qns, wahoowa94, Mar 17 08
Easier
wahoowa94
796 plays
18.
  I've Got Your Number! Test Your Knowledge   great trivia quiz  
Multiple Choice
 10 Qns
Jersey numbers are how the fans identify all their favorite players. Let's see if you can identify the number on the back of these baseball favorites. Have fun! :)
Tough, 10 Qns, Nightmare, Aug 23 10
Tough
Nightmare gold member
345 plays
19.
  Baseball's All-Century Numbers    
Multiple Choice
 20 Qns
This quiz tests your knowledge of the numbers of Baseball's All-Century Team as selected by Major League Baseball in 1999 and announced at Atlanta's Turner Field during the 1999 World Series. You get the player and his team and you give me his number.
Average, 20 Qns, adlehman, Aug 11 09
Average
adlehman
1033 plays
20.
  Baseball greats - uniform numbers    
Multiple Choice
 10 Qns
10 questions about some of MLB's finest players through the years & the uniform numbers they wore.
Tough, 10 Qns, Z-Wad, Jul 22 15
Tough
Z-Wad
182 plays
21.
  Pick a Number!   great trivia quiz  
Multiple Choice
 10 Qns
An all multiple choice quiz about two teammates and their jersey number. I hope that you enjoy it. :-)
Tough, 10 Qns, Nightmare, Jul 16 07
Tough
Nightmare gold member
572 plays
22.
  By the Numbers 2005    
Multiple Choice
 10 Qns
Let's see if you can keep up with some numbers of some Major League 2005 players. Good luck. :-)
Average, 10 Qns, Nightmare, May 13 05
Average
Nightmare gold member
652 plays
23.
  Even, Odd, High, Low?    
Multiple Choice
 10 Qns
Let's see if you can identify some teams, players, and their numbers in the 2008 season. Are they even, odd, high, or low? I hope that you enjoy it! :-)
Tough, 10 Qns, Nightmare, Jul 08 08
Tough
Nightmare gold member
462 plays
24.
  Now Batting, Number Eight    
Multiple Choice
 10 Qns
All about baseball players who have worn the number eight.
Average, 10 Qns, BxBarracuda, May 03 09
Average
BxBarracuda
413 plays
25.
  Mixed History of Baseball    
Multiple Choice
 10 Qns
All a numbers game with the baseball history greats!
Tough, 10 Qns, Nightmare, Feb 16 11
Tough
Nightmare gold member
1812 plays
26.
  Jersey Number Frenzy    
Multiple Choice
 10 Qns
Do you know famous modern day baseball players numbers on the back of their jersey?
Average, 10 Qns, Tripleplay19, Dec 03 06
Average
Tripleplay19
1186 plays
27.
  MLB Numbers 2001    
Multiple Choice
 15 Qns
A quiz on players and their numbers: I'll give you a number, you pick the player (and vice versa: I'll give a player, you pick his number).
Tough, 15 Qns, kramer1919, May 23 08
Tough
kramer1919
2163 plays
28.
  MLB Jersey Numbers    
Multiple Choice
 10 Qns
This quiz is for those baseball gurus with vast knowledge of jersey numbers over the past few years.
Difficult, 10 Qns, JayMasterFlex, May 02 09
Difficult
JayMasterFlex
527 plays

MLB Players Numbers Trivia Questions

1. The "Sultan of Swat", a.k.a Babe Ruth played most of his glamorous career with the Yankees. His final season of baseball was in 1935 with the Boston Braves. Which number did he wear in that final season?

From Quiz
I've Got Your Number!

Answer: 3

In his early career, Ruth did not wear numbers until 1929 before it was mandated by the American League in 1931. The Babe played for six seasons with the Red Sox before the infamous 'selling' of his services to the New York Yankees in 1920. He banged out 50+ home runs in a season on his way to 714 in his career. Ruth was inducted into the Hall in 1936 during the very first induction ceremony. He died in 1948 at the age of 53.

2. What MLB great did NOT wear #42?

From Quiz Baseball greats - uniform numbers

Answer: Tom Seaver

"Terrific" Tom wore #41 with a long Hall of Fame career pitching for the Mets (1967-1977, 1983), Reds (1977-1982), White Sox (1984-1986), Red Sox (1986) Jackie Robinson, baseballs first African American spent his time with the Dodgers & his #42 is now retired throughout the MLB, so no one will wear that number ever again. Mariano Rivera was the last to wear #42 in the Major Leagues and is bound to be a Hall of Famer as he Is one of the greatest closers ever. Bruce Sutter was a Hall of Fame relief pitcher inducted in 2006 known for his split-finger fastball. He pitched for: Cubs (1976-1980), Cardinals (1981-1984), and Braves (1985-1988)

3. The number 29 was retired by both the Angels and Twins in honor of this player who won seven batting titles, was an AL Rookie of the Year, and also won a league MVP. Who is this Hall of Fame great?

From Quiz What's in a Number?

Answer: Rod Carew

Carew played for 19 seasons from 1967-1985. All his batting titles and awards came with the Twins, and his last batting title was in 1978. The Twins traded Rod in 1979 to the Angels for four players. Then all his batting titles and awards stopped in his seven seasons with the Angels. His MVP came in 1977, and the Hall of Fame took him in 1991.

4. Hall of Famers Bill Dickey and Yogi Berra both wore number eight for the New York Yankees. How many World Series championships did these two outstanding catchers win combined during their careers?

From Quiz Now Batting, Number Eight

Answer: 17

Yogi Berra was elected to the Hall of Fame in 1972, and Bill Dickey had previously been elected there in 1954. Both men were enshrined as Yankee catchers. Bill Dickey played on some of the great Yankee teams of the early 1930s, winning seven championships with the team. As a Yankees coach in 1949, Bill mentored Yogi at the catching position. Yogi was a 15-time All-Star, 10-time World Series champ, and three-time Most Valuable Player award winner.

5. Which Cleveland Indian strikeout king and Hall of Fame great was the first to have his jersey retired by the team?

From Quiz American League Retired Numbers

Answer: Bob Feller

The others played their careers in the National League. Feller, nicknamed "Rapid Robert", played his entire 18 seasons with the Indians. In 1946, this number 19 set a season record for striking out 348 batters in modern day baseball. He had a career record of 266-162. Other Indians that were graced by having their numbers retired were Earl Averill and his number 3, Lou Boudreau's number 5, Larry Doby's 14, the number 18 of Mel Harder, and the 21 of pitcher Bob Lemon.

6. Which Braves slugger had his number 44 retired in 1977?

From Quiz National League Retired Numbers

Answer: Hank Aaron

Spahn was the first Brave to have his number 21 retired in 1965. Next up was Eddie Mathews' number 41, then Aaron's 44, Phil Niekro's 35, and Dale Murphy's number 3. Aaron played for the Braves from 1954-1974, before playing out his two final seasons with the Brewers. Hank hit 755 career home runs, and was a 1982 Hall of Fame inductee.

7. Every team in Major League Baseball retired this ground-breaking player's #42 jersey on April 15, 1997.

From Quiz Retired MLB Jersey Numbers

Answer: Jackie Robinson

Any player wearing #42 at the time was allowed to continue wearing it, under a so-called "grandfather rule". Some continued to wear it as a tribute to Jackie. In fact, nine players continued to wear #42 after April 1997, including Mariano Rivera of the Yankees and Mo Vaughn of the Red Sox.

8. Whose number 44 was retired with both the Braves and Brewers?

From Quiz Don't Even Think About It

Answer: Hank Aaron

The great Henry Aaron, who played for 21 seasons with the Braves, then his final two seasons with the Milwaukee Brewers, retired with 755 home runs. Hank was the NL MVP in 1957, and helped the Braves to the World Series crown over the Yankees. Strangely enough, Aaron led the league in home runs 'only' four times, compared to Babe Ruth who led the league 12 times.

9. Cincinnati Reds teammates Tony Perez and Joe Morgan helped the team get to four World Series in the 1970s. What is the total of their jersey numbers, with Morgan who wore number 8?

From Quiz Pick a Number!

Answer: 32

With Perez at first and Morgan at second base, they played next to each other for many seasons. Perez wore the number 24, and Morgan wore number 8.

10. This player was the first to have his number retired throughout baseball. His number was 42.

From Quiz MLB Retired Numbers

Answer: Jackie Robinson

In 1947, Jackie Robinson became the first African-American player to play Major League baseball. He was signed by the Dodgers and was Rookie of the Year. In 1949, he was the National League MVP.

11. Left-handed pitching great, Sandy Koufax, wore which number?

From Quiz All in the Numbers

Answer: 32

Born Sanford Braun, this 12 season Dodger, won the Triple Crown and Cy Young Award three times in his shortened career. His final season in 1966, Koufax threw a 27-9 record for his third Triple Crown, and Cy Young. He retired due to an arthritic elbow.

12. Hank Aaron's number minus Boog Powell's number equals which number?

From Quiz Mixed History of Baseball

Answer: 18

Aaron being 44 minus Powell's 26 = 18.

13. Which Hall of Famer did NOT wear a repeating number (example: 11, 22, 33... etc.)?

From Quiz Baseball greats - uniform numbers

Answer: Frank Thomas

White Sox slugger Frank "Big Hurt" Thomas wore #35 en route to Cooperstown (inducted in 2014). A great first baseman and hitter (.301 career average, 521 HR's & over 1,700 RBI's). Played for: White Sox (1990-2005), A's (2006 & 2008), Blue Jays (2007 & 2008). He was a 5 time All Star and 2 time MVP (1993 & 1994). Jim Palmer wore #22 en route to his Hall of Fame career pitching for the Orioles from 1965-1984. He is the best pitcher in Baltimore Orioles history winning 3 Cy Young awards. Had a career record of 268-152 with a 2.86 ERA, 8 years with 20+ wins and never gave up a grand slam. Barry Larkin wore #11 for the Reds from 1986-2004, playing shortstop en route to being inducted into the Hall of Fame in 2012. Eddie Murray wore #33 throughout his Hall of Fame career (inducted in 2003). Played for: Orioles (1977-1988, 1996), Dodgers (1989-1991, 1997), Yankees (1992 & 1993), Indians (1994-1996), Angels (1997). One of the greatest switch hitters ever and was only the 3rd person ever with over 500 HR's & 3,000 hits. He was an 8 time All Star, Rookie of the year, & 3 time Gold Glove winner

14. With three Hall of Fame Cleveland Indians involved, the Indians retired the numbers 5 and 14 in honor of Lou Boudreau and Larry Doby. When adding these numbers up, you find which Cleveland pitching Hall of Fame great whose number was also retired?

From Quiz You Can Count on That!

Answer: Bob Feller

Feller wore the number 19 with the Indians from 1936-1956. Throwing three no-hitters, Bob was also the MVP runner-up in 1940 although throwing for the Triple Crown even. He was runner-up to Hank Greenberg of the Tigers. Feller was inducted into the hall in his first year of eligibility in 1962.

15. The Mets and Yankees both retired the number 8 in honor of which Hall of Fame player?

From Quiz I've Got Your Number!

Answer: Yogi Berra

The number 8 is retired in the Yankee organization in honor of two players, Bill Dickey and Yogi Berra. Yogi's final playing season was with the Mets in 1965. In the 1950s, Berra was in the top four of the MVP Award voting an amazing seven times.

16. Two great managers who helmed the Dodger organization back-to-back, both had their numbers retired. One was Tom Lasorda and his number 2. Whose number 24 was retired also?

From Quiz What's in a Number?

Answer: Walter Alston

Alston played in only one game in his career with the 1936 St. Louis Cardinals. He struck out in his only at-bat. He took the reins of the Brooklyn Dodgers in 1954, made the move with the team to Los Angeles in 1958, and retired in 1976. He took the Dodgers to seven World Series while winning four. Lasorda picked up the team with four games left in the 1976 season, then retired in 1996. Both managers were elected to the Hall of Fame.

17. While wearing #22 for the Baltimore Orioles, I won three World Series championships and three Cy Young Awards over my 20-year career. I amassed 268 wins and was elected to the Baseball Hall of Fame in 1990. Who am I?

From Quiz Baseball by the Uniform Number [3]

Answer: Jim Palmer

Two-time World Series champion Jimmy Key wore #22 while pitching for the Toronto Blue Jays and New York Yankees (he wore #23 in Baltimore because Palmer's #22 was already retired). Mueller wore #22 for the New York Giants in the 1950s. Podres began wearing #22 after the Dodgers moved to Los Angeles in 1958. He was part of their fantastic 1963 team and won 148 games in his career.

18. Hall of Famer Joe Morgan wore number eight for the Cincinnati Reds during the days of the Big Red Machine in the mid 1970s. What year was this great second baseman turned commentator elected to the Hall of Fame?

From Quiz Now Batting, Number Eight

Answer: 1990

Joe Morgan was a 10-time All-Star, with one All-Star game MVP award, two-time World Series Champion, and two-time National League Most Valuable Player. He chose number eight because of Willie Stargell.

19. Pitcher Johan Santana won the AL Cy Young Award in 2004 and 2006 with the Twins. He also pitched a Triple Crown in 2006. He became a New York Met in 2008. Which jersey number did he wear with both teams?

From Quiz Hey, Watch My Back!

Answer: 57

Santana played with the Twins from 2000-2007. 2008 saw him in the familiar 57, but with the Mets this time. He went 16-7 with 206 strikeouts with the Mets, but the team finished second in the NL East behind the Phillies.

20. In 1939, this New York Yankee slugger was the first player ever to have his number (#4) retired in the history of baseball.

From Quiz Retired MLB Jersey Numbers

Answer: Lou Gehrig

The New York Yankees and the Cleveland Indians were the first teams to use uniform numbers in 1929. They used them so the players were more easily tracked on the field. By 1937, all teams were required to use uniform numbers.

21. The great Ernie Banks, multiple all-star shortstop, two-time MVP, and also a Gold Glove infielder, played his entire career with the Chicago Cubs, wearing which uniform number that was retired?

From Quiz Don't Even Think About It

Answer: 14

"Mr. Cub", as he is known to all Chicago fans, wore the number 14 from 1953-1971. He was the ultimate within baseball of Chicago. He retired with 512 home runs, tied with Eddie Mathews of the Braves, and was inducted into baseball's Hall of Fame in 1977.

22. Lou Brock and Curt Flood shared the St. Louis Cardinal outfield for many seasons. With Brock wearing the number 20, what was the total of their jersey numbers?

From Quiz Pick a Number!

Answer: 41

Flood wore the number 21. They shared the Cardinal outfield from 1964-1969. Curt started the arbitration process for baseball players.

23. This 1936 Yankee bonus baby, Joe DiMaggio, won all 13 all-star bids in his 13 seasons in the pinstripes. He also won three AL MVP awards, and was runner-up another two times. Yankee fans recognized him by which jersey number?

From Quiz Watch My Back

Answer: 5

DiMaggio, one of three baseball brothers, won his MVPs in 1939, 1941, and 1947. His runner-ups were to Charlie Gehringer in 1937, and Lou Boudreau in 1948. Joe was a 1955 Hall of Fame inductee, and later died in 1999.

24. He played for the Yankees under the nickname "Lousiana Lightning". In 2003, the Yankees retired his number 49. Who was he?

From Quiz MLB Retired Numbers

Answer: Ron Guidry

Guidry was a four time AL all-star. Guidry is most well known for having one of the most amazing single seasons ever in 1978. He went 25-3 with a 1.74 ERA.

25. Dodgers Second Baseman Jackie Robinson wore which number?

From Quiz Baseball's All-Century Numbers

Answer: 42

All major league teams had retired his number in 1999.

26. Pitcher Randy Johnson was a 2015 Hall of Fame inductee. He wore the numbers 34, 41, 57, and which other number for 19 of his 22 seasons in his career?

From Quiz I've Got Your Number!

Answer: 51

Johnson began his career with the Expos in 1988 but didn't begin to blossom until 1990 with the Mariners. Five Cy Young Awards and three runner-ups to the Cy Young later, Randy retired in 2009 with a 303-166 win-loss record along with 4875 strikeouts, second only to the great Nolan Ryan.

27. Who was the first MLB player to have their number retired?

From Quiz Baseball greats - uniform numbers

Answer: Lou Gehrig

Hall of Famer and baseball great, Lou Gehrig, had his #4 retired by the Yankees when he retired due to having Arterial Lateral Sclerosis (ALS), the disease that now bears his name. Making him the first person to have their number retired. Jackie Robinson's #42 is retired throughout the MLB. No one will ever wear that number again in honor of baseball's first African American. Roberto Clemente wore #21 through his Hall of Fame career with the Pirates. A well known humanitarian as well, he died in a plane crash after getting his 3,000th hit. Many people want #21 retired throughout the MLB like they did with Jackie Robinson and his #42. Red Sox great Ted Williams has his #9 retired in Boston and was the basis for the number & character Robert Redford played, Roy Hobbs, in the great baseball movie "The Natural".

28. The Cardinals number 6 of Stan Musial was retired along with the number 14 of their third baseman Ken Boyer. If you add those two numbers up, which base-stealing Cardinal whose number was also retired, would you come up with?

From Quiz It's All in the Numbers!

Answer: Lou Brock

Brock was the second player in the 20th Century to steal over 100 bases in a season (Dodger Maury Wills in 1962) by stealing 118 in 1974. Lou wore the number 20 in the outfield for 16 seasons in St. Louis. He was inducted into the Hall of Fame in 1985.

29. Which San Francisco Giant and 500 Home Run Club member had his number 44 retired by the club?

From Quiz What's in a Number?

Answer: Willie McCovey

Big Mac won the NL Rookie of the Year Award in 1959, then the NL MVP 10 years later. He cranked out 521 home runs. Aaron's number 44 was retired by the Braves, and Jackson's 44 was retired by the Yankees. They are all 500 Home Run Club members.

30. Gary Carter is a great Hall of Famer who wore number eight and played most of his career as a catcher. He is in Cooperstown with a Montreal Expos hat on. Many know him more for being on which team's 1986 World Series Championship team?

From Quiz Now Batting, Number Eight

Answer: New York Mets

Gary 'The Kid" Carter was elected to the Hall of Fame in 2003. Gary compiled over 2000 hits, 1100 RBIs, 1000 runs scored, and 341 home runs in 2296 games. He went to 11 All-Star games winning the Most Valuable Player award at two of those, three Gold Gloves, and five Silver Slugger awards. He played his first 10 full seasons with the Expos, five seasons with Mets, one with Dodgers, one with the Giants, and finished with his original team, the Expos. Gary Carter's number was retired by the Expos, but when the team moved to Washington D.C. thus becoming the Washington Nationals, the retired number along with those of other Expo greats was moved to the Belle Center, home of the Montreal Canadians.

This is category 24699
play trivia = Top 5% Rated Quiz, take trivia quiz Top 10% Rated Quiz, test trivia quiz Top 20% Rated Quiz, popular trivia A Well Rated Quiz
new quizzes = added recently, editor pick = Editor's Pick editor = FunTrivia Editor gold = Gold Member

Teachers / educators: FunTrivia welcomes the use of our website and quizzes in the classroom as a teaching aid or for preparing and testing students. See our education section. Our quizzes are printable and may be used as question sheets by k-12 teachers, parents, and home schoolers.

 ·  All questions, answers, and quiz content on this website is copyright FunTrivia, Inc and may not be reproduced without permission. Any images from TV shows and movies are copyright their studios, and are being used under "fair use" for commentary and education.