Career
He plays in the Back Row. He made his National Rugby League (NRL) debut for the North Queensland Cowboys in Round 13 of the 2008 season against the Wests Tigers, and played three NRL matches that season. He subsequently played for the Redcliffe Dolphins in the Queensland Cup, and midway through the 2011 season, signed to return to the NRL to play for the Brisbane Broncos.
In 2012 he was named in the Queensland Residents side.
On 19 June 2014, Slyney signed a 2-year contract extension with the London Broncos keeping him at the Broncos until the end of 2016.