The Toronto Maple Leafs will have to try and snap their six-game losing streak down a defenceman.

Morgan Rielly was ruled out for the remainder of Saturday’s game against the Vancouver Canucks at the start of the third period with an upper-body injury, the team announced.

It’s unclear what caused Rielly to leave the game. The blue liner was a minus-2 in 12:34 of ice time before he was forced to exit.

However, Maple Leafs head coach Craig Berube told the media post-game that Rielly suffered an upper-body injury, and there’s no timeline for return yet as he needs further evaluation.

Rielly, 31, came into Saturday’s contest with seven goals and 24 assists in 53 games.

Selected fifth overall by Toronto in the 2012 NHL Draft, Rielly has played his entire career with the Maple Leafs.