He also skated in six playoff games, scoring one goal and one assist; the Mooseheads were eliminated in the first round by the Rouyn-Noranda Huskies.
Groulx won the Guy Carbonneau Trophy as the 2019–20 QJMHL best defensive forward.
[3] Groulx began his professional career with Anaheim's American Hockey League (AHL) affiliate, the San Diego Gulls, in the 2020–21 season, scoring ten goals and 29 points in 42 games and led all AHL rookies in shorthanded points.
[9] Groulx made his NHL debut the following season in a 4–1 victory over the Winnipeg Jets on opening night, October 13, 2021.
[10] He registered his first assist and point against the Vegas Golden Knights on October 29[9] and his first goal against the St. Louis Blues on November 7.
[16] Following his first four professional seasons within the Ducks organization, Groulx was not tendered a qualifying offer and left as an unrestricted free agent.
[19] Although not a tournament regulated by the International Ice Hockey Federation but still considered a major event for under-18 players; Groulx next played in the 2017 Ivan Hlinka Memorial Tournament where he played five games for Canada scoring one goal and three points with six penalty minutes, winning gold with the team.