Thomas Erlington played U Sports football with the Montreal Carabins from 2013 to 2016 where he was a member of the 50th Vanier Cup championship team in 2014.

[1] He played in his first career game on July 29, 2017, against the Calgary Stampeders, but did not record any stats.

During the playoffs, Thomas Erlington had three rushes for 15 yards as well as a receiving touchdown for the Ti-Cats, who reached the East Division finals but were defeated by Ottawa, who advanced to the 106th Grey Cup.

[2] Thomas Erlington suffered a knee injury early in the 2019 season and underwent surgery on July 10, 2019.

[5] On the day before the start of free agency, Thomas Erlington re-signed with the Tiger-Cats on February 7, 2022.