2021: Blue Bombers

Gauthier signed a one-year contract extension on January 19, 2022 to remain with the Blue Bombers for a sixth season. Entering 2022 he has suited up for 63 games with the club over five years and has not missed a game in the previous two seasons.
Gauthier posted career-best numbers in 2021 while working in a linebacker rotation in the Blue Bombers top-rated defence, finishing with 15 defensive tackles and adding nine more on special teams.

2019: Blue Bombers

Gauthier dressed in all 18 regular-season games for the first time in his four-year career with the Bombers and suited up for all three playoff games. He finished with 12 special-teams tackles in 2019, tied for fourth-best on the club, and made a touchdown-saving tackle on a punt return in the Western Final that was critical in the victory over Saskatchewan.
Gauthier signed a one-year contract extension on January 8, 2021.

2018: Blue Bombers

Injuries limited Gauthier to 10 games in 2018, but he continued to be a force on special teams with 11 tackles. Was leading the CFL in special-teams tackles before his injury on July 7, returned after three games before missing the remaining five regular-season contests. Did return to suit up for the Bombers two playoff games.

2017: Blue Bombers

Appeared in 12 games for the Bombers in his second CFL season and registered 10 tackles on special teams.

2016: Blue Bombers

Played in nine games as a rookie after being selected in the fourth round, 28th overall, in the 2016 CFL Draft… Recorded seven special-teams tackles… Became a regular in the 44-man lineup by playing in the final seven regular season contests.

College

Played four seasons with the Laval Rouge et Or, where he totaled 130 tackles… A two-time RSEQ All-Star, Gauthier earned CIS Second-Team All-Canadian honours as a senior.