After Jim Montgomery’s firing in mid-November, Sacco was elevated into the interim head coach role. He went 24-30-6 in his 60 games behind the bench, but the Bruins held a fire sale at the trade deadline that led to trading four key players, including team captain Brad Marchand. The roster was underwhelming.

Joe Sacco wasn't able to retain his role after being interim Head Coach in Boston, and now he's signed with a rival team under new Head Coach Mike Sullivan.

David Quinn is following Mike Sullivan back to New York. The former rookie Rangers coach, who stood behind the bench for three seasons from 2018 to 2021, is set to remain on Sullivan’s staff — after the two reunited in Pittsburgh last season — and return to his first NHL club as an assistant, per a league source.

Rangers head coach Mike Sullivan will add former head coaches David Quinn and Joe Sacco to his staff as assistants.

Those who have worked with and played under Mike Sullivan over the years described what he'll bring to the New York Rangers, on and off the ice.

New York Rangers coach Mike Sullivan is putting together his staff for the 2025-26 season, and reports suggest he's bringing in some notable names. Among them is Boston interim coach Joe Sacco.