He was recruited from South Australian National Football League (SANFL) club Norwood.
Cockshell played two games for Port Adelaide in 2007 before being delisted at the end of the 2008 AFL season.
In 2012 Cockshell moved back to Port Adelaide to play for their SANFL side.
In 2021, Cockshell was convicted of deception offences and was given a suspended jail sentence.
This Australian rules football biography of a person born in the 1980s is a stub.