Cockie made his senior football debut for
Subiaco in the
West Australian Football League (WAFL) in the opening round of the 2008 season and went on to play in every game, including their third successive grand final victory. That year, he also represented Western Australia against Queensland in Townsville. Cockie was drafted by the
West Coast Eagles with the 18th pick (second round) in the
2009 AFL Rookie draft, and was soon elevated from the rookie list to make his debut against
Fremantle in Round 6, 2009. He played four games before being demoted back to the rookie list to make way for the return of
Luke Shuey from injury. He was de-listed by West Coast at the end of the
2010 season. Cockie spent the 2011 season playing for his former team, Subiaco, in the WAFL, before moving to Victoria to play for
Victorian Football League (VFL) side,
Sandringham in 2012. After four seasons in the VFL, Cockie re-joined Subiaco for the 2016 season. ==Other activities==