The Dallas Stars confirmed that forward Mats Zuccarello broke his arm while blocking a shot in his Stars debut Sunday.
The 31-year-old was the centerpiece of the Stars' trade deadline deals, and Stars general manager Jim Nill said Monday that the team decided not to chase someone to replace him.
"Injuries are part of the game. You know they're going to happen," he said. "We know we're hopefully going to get him back in four weeks."
Zuccarello was seen by doctors Monday, but a decision on surgery to help accelerate the healing process was not revealed.