He switched to rugby union, playing in Japan for the NTT Communications Shining Arcs and the Kobelco Steelers, earning selection for the Japanese national team after completing three years residency.

[2] In 1997 Wing was selected to play in the New South Wales Schoolboys 1st XV where the team remained undefeated until the final decider.

Wing made his first grade debut for South Sydney against the Auckland Warriors in round 1 1998 at Mt Smart Stadium.

In round 10 of the 1999 NRL season, Wing announced himself as a talent of the future when he scored a solo try against Cronulla-Sutherland where he beat five Cronulla players to cross over the line.

Wing played from the interchange bench in the Sydney Roosters' 2000 NRL Grand Final loss to the Brisbane Broncos.

Having won the 2002 NRL Premiership, the Roosters travelled to England to play the 2003 World Club Challenge against Super League champions, St Helens R.F.C.

Wing announced in June 2007 that he would be leaving the Roosters at the end of the 2007 NRL season to take up a four-year contract with the South Sydney Rabbitohs, the club where he started his career.

[15] In May 2009, he was named in the 17-man squad to represent New South Wales in the opening game of the 2009 State of Origin series on 3 June 2009, in Melbourne.

He scored his first try for Japan in June 2013, in a historic 23–8 win over Wales, playing at centre in a side coached by fellow Australian Eddie Jones.