In 1992, by far his most successful year, he won thegold medal in the Olympic 400 m. He twice brokeLee Evans'Olympic record of 43.86, (set at altitude during the1968 games in Mexico), clocking 43.71 in his semi-final, before going on to record 43.50 in the final. As of August 2024, this is still the track record for Barcelona and the second‑fastest time run in Spain. He was a member of the 4 × 400 mrelay team, running the second leg in 43.10, which smashed the then-world record in a time of 2:55.74.[2]
At theWorld Championships in 1991, Watts won a silver medal in 4 × 400 relay, which he turned to gold in the following championships in 1993 running the second leg on the team that took almost a second and a half off the then-World Record he had been a part of the year before. That race time still stands as the World Record. In the 1993 Individual 400 m Final, where Watts was expecting to challenge the time of his relay teammatesMichael Johnson andButch Reynolds, his custom‑builtNike shoe disintegrated as he was coming off the final turn. Continuing to run, he still managed fourth place.[3][4] Since this incident, poor Nike shoe quality has been referred to as "doing the Quincy Watts" in track circles. It has also affected Nike's concern for quality control.[5]
In 1994 and 1995, he failed to break 45seconds and in 1996 finished a disappointing seventh in the US Olympic trials in a time of 45.64. Overshadowed by Michael Johnson, he retired in 1997 and was hired as the head coach at Taft High School. After his tenure at Taft, he worked as an assistant track coach atHarvard-Westlake School. Watts currently serves as an assistant coach for the Men's and Women's sprints teams at the University of Southern California. In addition to his coaching responsibilities, he also trains several professional athletes, includingWillie McGinest andCurtis Conway. Notably, Conway was a high school competitor of Watts.[6]
Watts currently holds the position of head coach at USC.[7]