OTTAWA — The Ottawa Senators will be without Brady Tkachuk for about a month after the rookie winger tore a ligament in his leg.

Senators head coach Guy Boucher revealed news of the injury after the team practised in Gatineau, Que., on Wednesday.

Tkachuk was not on the ice for the session.

The fourth overall pick at June's NHL draft missed the first two games of the season with a groin injury before being held off the scoresheet in his debut on Oct. 8.

But since then, the 19-year-old had picked up three goals and three assists in three games, including the winner in Monday's 4-1 victory over the Dallas Stars.

Off to a surprising start with a young roster, the rebuilding Senators (3-2-1) don't play again until Saturday when they host the Montreal Canadiens.