Unable to break into the team, Crothers joined the Geelong Supercats and made his NBL debut in 1991, playing in a side which included a young Shane Heal.
His AFL career consisted of just four games but he was a part of a strong team which made and lost the Grand Final in both seasons he was at the club; 1994 and 1995.
Playing as a ruckman, Crothers had seven hit-outs and seven disposals on his league debut, against North Melbourne late in the 1994 AFL season.
His appearances in 1995 were limited to games against Collingwood and Richmond, the latter at the Melbourne Cricket Ground.
After leaving the Cats, Crothers joined the Port Adelaide Football Club in 1996 and was named on the interchange bench in the Magpies' premiership win over Central District.