1980-93 Brett played for Parramatta Football Club 265 first grade games and was a member of the 81, 82 and 86 premiership sides. He has the record for the most amount of tries in the club and the most appearances in first grade. Brett represented NSW in 16 state of origin games and represented Australia in 17 tests including 2 undefeated kangaroo tours. He also played for the English Wigan club winning the challenge cup final at Wembley stadium.