Gill skated with the Rimouski Oceanic in his third QMJHL season, and saw a step forward in his defensive ability. He scored six goals and added 29 assists for 35 points in 51 games, but saw his plus-eight climb to a plus-thirty this year.

The Philadelphia Flyers signed Gill to a three-year, entry-level contract.

Gill was drafted 59th overall by the Flyers.

Spencer Gill is one of the more improved players in the QMJHL this season, playing big minutes as a right-handed defenseman for Rimouski. There were a lot of red flags surrounding his defensive abilities as a whole, but he has improved his gap control and positioning this season. Furthermore, Gill has taken a big step offensively by refining his breakout/transition game while using his large frame to shield defenders during his activations. Also, he has improved his breakout passes both on his forehand and backhand. Still seen as a project, Gill has become an intriguing RHD with efficient transition tools.

The Oceanic gave up 236 goals against in 2023-2024 and in 2024-2025 they allowed just 178. That of course does not mean that that is all attributable to Gill himself, but he certainly contributed.

Gill could be a decent, middle-four defenseman at the NHL level if his development arc continues. He likely will be more of a two-way defenseman, but will only be able to stick if his defensive abilities continue to evolve. He will skate what is likely to be his final QMJHL season with Blainville-Boisbriand in 2025-2026, and look to graduate to the AHL thereafter.