 As a Mascot Jets junior who has come through every South Sydney representative junior grades, in 2005 he came through to the NRL in the green and red of the South Sydney Rabbitohs, scoring two tries in his first season.The following year, Manuokafoa played 19 games as the club finished last on the table.In the 2007 NRL season, he was part of the South Sydney team which reached the finals for the first time since 1989.