He played in the National Rugby League for the Cronulla-Sutherland Sharks, St. George Illawarra Dragons, Penrith Panthers and the Canterbury-Bankstown Bulldogs, and in the UK for the Gateshead Thunder,[5] Celtic Crusaders[6] and the Castleford Tigers,[7] mainly as a winger.

[8] In late 2007, Youngquest agreed to a one-year deal with the Wests Tigers, his fourth club in six years, but failed to make the NRL squad.

[12] In 2009, Youngquest played for English Championship team Gateshead Thunder, where he caught the eye of Brian Noble, the coach for Crusaders RL.

[13] 2011 brought a move to Super League team Castleford Tigers, Youngquest possibly played his best rugby there making 40 appearances and scoring 29 tries and 2 goals.

[15][16] During his time as a professional Rugby League player, Youngquest gained exposure from his involvement with a variety of charitable organizations and was featured on the cover of numerous magazines worldwide.