 He also won the league leaders shield with St Helens in 2005.He played at representative level for Great Britain (Under-21s), England (Under-21s), and Wales, and at club level for the Wakefield Trinity Wildcats, Brisbane Norths, in the National Rugby League (NRL) for Melbourne Storm, St Helens,the Castleford Tigers (two spells), and the Huddersfield Giants he won the coaches player of the year award in a stand out season in 2009.stand, as a .Mason was born Dewsbury, West Yorkshire, England.