Sullivan's first Brazilian Jiu-Jitsu competition was the British Open, and the experience left a lasting impression he reflected on at length in his 2015 Jiu-Jitsu Style interview. He described feeling more nervous before that event than he could recall feeling before major basketball games — a striking admission from a man who had captained his country at an Olympic Games.
His explanation identifies a structural difference between the two sports: basketball allows a competitor to ease into a game, find rhythm, and recover from early mistakes across an extended period. Jiu-Jitsu offers no such grace — a short match window demands immediate readiness from the opening exchange. There is no settling in.
After winning his first match, Sullivan described feeling ecstatic and physically unsteady, walking over to his coach on wobbly legs. He went on to win a medal at the British Open, though the belt level, weight division, and medal colour were not specified in the source. Having earned every previous medal of his career through basketball, Sullivan expressed particular pride in earning recognition in an entirely different sport. He framed the nerves not as a weakness but as a meaningful signal — evidence that the outcome genuinely matters — and offered that perspective as direct advice to competitors across any sport.