Rooney had been with Tyson since late 1982, when Tyson was 16 years old and just won the National Junior Olympics (having a 9–1 amateur record, with all 9 wins inside the distance), oversaw the second half of his amateur career (44 fights), saw the start of his professional career in 1985, followed Tyson throughout his world championship days, until Tyson's bout with Michael Spinks in 1988, when, on the insistence of Don King, Tyson fired Rooney along with all other staff that comprised the Team Tyson from the beginning.