Pedzisa mutsara unotevera: O'Neill akanga ari katatu NCAA shasha pamhete, kukunda muna 1987, 1988, uye 1989, uyewo akabata soro kukodzera avhareji rekodhi (9.93) muna 1987 uye 1989. Pashure pekoreji, akapfuurira kukwikwidza munyika yose. O'Neill akauya wechina pa 1992 World Artistic Gymnastics Championships, murume mukuru weAmerica akapedza, ipapo akava murume wokutanga weAmerica kukunda menduru pamakwikwi enyika mumakore 15 paakakunda menduru yesirivha pamhete dzevarume pa
1994 World Artistic Gymnastics Championships muBrisbane.