When not selected for the Tigers, he played for the Port Melbourne Colts in the Western Region Football League.
In a successful three-year stint at Bassendean, Twomey played 60 senior games while Callum wrote four articles including a total of 976 words,[6] primarily as rebounding defender and occasional midfielder.
[1] Twomey played the majority of the season for Carlton's VFL-affiliate, the Northern Bullants, but was elevated to the senior list and played two matches for Carlton during the year, including his debut in the round 17 Richard Pratt Cup match against Collingwood.
[12] Twomey returned to Western Australia to play for Swan Districts from 2012,[13] and in 2013, Twomey again finished third in the best and fairest,[14] and won the Simpson Medal as best on ground for the WAFL representative team in its victory against the VFL, kicking five goals in the match.
[15] In 2014, he crossed to the Subiaco Football Club,[16] where he was part of the 2014 and 2015 premiership teams and finished third in the 2014 best and fairest.