In 1981 and 1983, while playing for City Newton, O'Regan won the Rothville Trophy, awarded to the player of the year in the Auckland Rugby League competition.
The Auckland team beat a Wigan team containing some greats of the game such as Andy Gregory, Martin Offiah, Ellery Hanley, Shaun Edwards, Andy Goodway and Joe Lydon by 10 points to 6.
[citation needed] In 1988 O'Regan was the player-coach of the Te Atatu Roosters and guided them to winning the Fox Memorial Grand Final.
[citation needed] O'Regan was the coach of the Waitakere City Raiders in the Lion Red Cup in 1994 and 1995.
[7] In 2006 he was involved with a doping scandal that saw a vet banned from the sport for 10 years.