Gaucher was called up by Philadelphia on Wednesday.
Gaucher is expected to serve as a Black Ace, which means he'll be around the team and attend practices for the experience, but the 25-year-old isn't expected to draw into any playoff games. Gaucher finished the 2025-26 regular season with 20 goals, 36 points and 44 PIM in 69 outings with AHL Lehigh Valley, as well as four shots and three hits in four appearances with Philadelphia.