Lamoureux will miss 4-6 months following surgery to repair a dislocated shoulder, the team announced Monday. Additionally, the blueliner was placed on injured reserve.

Lamoureux was a lock for injured reserve given his recovery timeline. Even if healthy, the 22-year-old blueliner faced an uphill battle to secure a spot on the Opening Night roster. Once given the all-clear, Lamoureux should be expected to head down to the minors before being on the shortlist of potential call-ups.