He competed for the Railways senior team in their 2010 GNFL Grand Final win and lined up on future Gold Coast Suns teammate Jack Martin.

[5] O'Meara was then recruited by the Perth Football Club for the 2011 WAFL season and made his senior debut in August.

[10] After playing every game for the Suns during his debut season, he was subsequently named the NAB AFL Rising Star for 2013.

[12] More surgery was required for his patella tendon that eventually resulted in him missing the entire 2015 and 2016 seasons through injury.

[16] O'Meara had an injury-plagued first season at Hawthorn, managing only six games due to ongoing knee problems.

Due to Tom Mitchell's injury preventing him from participating in the latter season, O'Meara was widely seen as Hawthorn's most effective midfielder.

[21] O'Meara was eventually traded to Fremantle, allowing him to return to his home state with a four-year contract.