Canada could be without 2013 NHL Draft class member Jonathan Drouin as it prepares to start the World Junior Championship against Germany on Boxing Day.

According to Hockey Canada’s Twitter, the team has registered 22 skaters for the tournament and will reassess Drouin’s status on Boxing Day.

“Jonathan Drouin suffered a mild charleyhorse on Tues. Will be reassessed tomorrow,” said the tweet.

Drouin suffered the injury in a collision late in practice and was slated to start the tournament on Canada’s second line.

The Ste Agathe, QC product made the club as one of two Halifax Mooseheads draft eligibles. He leads the Canadian Hockey League in points-per-game with 19 goals and 48 points in just 24 games.

Though Drouin’s World Junior participation is in doubt, another 2013 eligible may be joining Sweden as an injury replacement.

An injury to Anaheim Ducks prospect Hampus Lindholm could open the door for an appearance from Swedish blueliner Robert Hagg, who wasn’t named to Sweden’s preliminary roster. Hagg would join five other Swedish draft eligibles on the roster should Lindholm be unable to play.

Lindhom’s status is being monitored by Sweden.