Answer: Daley Thompson
The decathlon is an Olympic event combining ten different disciplines from athletics (track and field), namely 100 metres sprint, long jump, shot put, high jump, 400 metres, 110 metres hurdles, discus throw, pole vault, javelin throw and 1,500 metres. At the Olympic Games in Moscow 1980, three of the candidate medal winners missed the games. The American Bob Coffman and the West-German Guido Kratschmer missed the games because their countries boycotted them, and the Russian Aleksandr Grebenyuk was injured. So Daley Thompson was the best bet among bookmakers.
He started winning the 100m sprint and the long jump, and with a fifth place for the shot put and second place in high jump he stayed in the lead. He won the 400m, thus comfortably leading the tables after the first day. The second day he started with second place on the hurdles, twelfth place on the discus throw and fifth place in the pole vault. Sixth place in the javelin throw and tenth in the 1,500m were enough to clench the gold medal. The silver went to the Russian Yuri Kutsenko and the bronze to the Russian Sergey Zhelanov.
In Los Angeles 1984 Thompson had three West-German contenders for the medals: Jürgen Hingsen (the world record holder), Siggi Wentz and Guido Kratschmer. Just as four years earlier, Thompson won the 100m, the long jump and the 400m and lead the tables from start to finish. Thompson (born 1958) retired in 1992, having competed in four Olympic Games (1976-1980-1984-1988).
Sebastian Coe (born 1956) won two gold medals on the 1,500m (both in 1980 and 1984). Linford Christie (born 1960) won the 100m sprint in 1992 in Barcelona. Mo Farah (born 1983) won the 5,000m and the 10,000m, both in London 2012 and in Rio de Janeiro 2016. That makes him the first British track and field athlete with four gold medals.