For many, you can only be considered a true great of athletics if you have an Olympic gold medal.
Colin Jackson is arguably one of the exceptions to that rule.
The 110m hurdler achieved everything else in his sport.
He won an Olympic silver. He also won two world titles, was undefeated at the European Championships, was a two-time Commonwealth Games champion and held the world record for more than a decade.
In a new BBC Cymru Wales documentary, Jackson recalls how skipping a warm-up cost him that elusive Olympic title.
The programme Colin Jackson: Resilience hears from the man himself, as well as his family, friends, former coach and fellow athletes.
The 57-year-old looks back on a stellar career and concludes he feels “complete”, despite suffering heartache in three successive Olympic finals.
“I met Colin as a 14-year-old,” says his former coach, Malcolm Arnold.
“He said he was going to make it as a professional athlete, which was quite a bold statement for a young lad.
“At that time he was a bit of a skinny wimp and the thought of him becoming a top-class professional athlete wasn’t on really.
“But he said ‘I’m going to make it’ – and he was world class at the age of 18.”
Hard work and resilience are key themes of the documentary.
His technique is praised too. Former Olympic champion hurdler Sally Gunnell described how Jackson would “clip, but not clip” the tops of the hurdles in a style that was “as smooth as possible”.
Jackson was a multi-talented athlete, who had also impressed in the decathlon as he started out in athletics.
He was also a keen cricketer. He captained his school team as a youngster and once dreamed of representing his country.