In the early days the decathlon was sometimes completed in a single day, but sometimes also spread over three days. The timing situation in each particular case can be worked out from the relevant given dates. Throughout, the ensuing statistics
Dan O’Brien won an Olympic gold medal at the Atlanta Olympic Games (1996). He is triple decathlon World champion (1991, 1993, 1995) and a former World Record holder (8891 points scored in Talence 1992).