Ottawa Senators general manager Pierre Dorion announced that forward Colin White has suffered a broken left wrist and will be out six to eight weeks.
White left Monday's preseason victory against the Toronto Maple Leafs after blocking a shot with less than two minutes remaining in the game and exited the ice favouring his left arm.
Dorion said White has already had surgery on his wrist and is "devastated" by the injury.
"We weren't sure last night [of the extend of the injury], but [White] is devastated [by the injury]," Dorion told reporters. "With some of the injuries up front, there was a spot there or a few spots there, but obviously he will not start the year with [the Senators]."
The 20-year-old appeared in two games during the regular season for the Senators and one playoff game in 2016-17 and was hoping to crack the team's roster out of training camp.
White joined the Senators last April after finishing the season at Boston College. He appeared in two games during the regular season and one playoff game but did not record a point.
The Boston native was drafted in the first round (21st overall) of the 2015 NHL entry draft.