Head coach/GM Steve Spott couldn't say how long the star forward would be out but Faksa will not definitely not play in Friday's Game 5 against the Owen Sound Attack.
Faksa took a shoulder to his chin during the second period of Game 4 of the OHL's western conference quarter-final Wednesday night in Owen Sound.
"It's devastating," said Spott. "He's not doing well. It's a huge loss for our hockey club. This is a guy who was trying to be a top ten pick in the NHL draft."
Brandon Francisco will take Faksa's spot in the lineup for Game 5.
"I've said it before, one player's loss is another player's opportunity," said Spott.
Faksa had three points in three playoffs games heading into Wednesday's tilt. He is projected to go in the first round of the NHL draft and the front-runner to win OHL rookie of the year after leading all first-year players with 66 points in 62 games.