Brandon Montour has been diagnosed with an MCL sprain, the Sabres announced Thursday. His estimated recovery time is six weeks.
Montour sustained his injury during Canada's 6-5 win over host country Slovakia at the IIHF World Championship on Monday. The defenseman was one of three Sabres participating in the tournament, along with Jack Eichel (United States) and Sam Reinhart (Canada).
"It was the first time Brandon had the opportunity to wear the maple leaf and represent his country," Sabres general manager Jason Botterill, who is part of Team Canada's management team for the tournament, said Wednesday. "I know he had a lot of excitement being over there and a lot of pride."
Montour was a dynamic presence on the back end for Buffalo after being acquired from Anaheim at the trade deadline this past season, tallying 10 points (3+7) in 20 games. His 54.36 Corsi-for percentage led the team, save for brief stints from rookies Alexander Nylander and Victor Olofsson.
You can follow Eichel and Reinhart for the remainder of the tournament here. Canada and Team USA both have three games remaining in the preliminary round, which continues on Saturday.