 He played for the Denver Broncos in 1963, and for the Buffalo Bills in 1964 and 1965, playing on the Bills' two league championship teams.In his six years of professional football, he played on four AFL championship teams, the only man ever to do so.Groman has more yards receiving in a rookie year than any other player (1,473 in 1960, when the season was 14 games long rather than the current 16).