Updated

MISSISSAUGA, Ont. -- Owen Sound Attack center Joey Hishon will miss Monday's MasterCard Memorial Cup game against the Saint John Sea Dogs with an undisclosed injury after he was elbowed in the face late in the team's tournament opener Saturday against the Kootenay Ice.

Attack coach Mark Reeds said Hishon, whose 24 playoff points (5 goals, 19 assists) tied for the Ontario Hockey League playoff scoring lead, underwent a baseline concussion test.

"We'll have some indication when we get the results back," Reeds said following Owen Sound's morning practice here at the Hershey Centre.

Hishon, taken by the Colorado Avalanche with the 17th pick of the 2010 Entry Draft, was "doing fine," Reeds said.

With 5:35 left in what became a 5-0 Owen Sound victory, 6-foot-4 Kootenay captain Brayden McNabb met the 5-foot-10 Hishon near center ice. As Hishon tried to get away from the hit, McNabb elbowed him. Hishon did not return to the game.

McNabb, a defenseman taken in the third round in 2009 by the Buffalo Sabres, received an elbowing major, a game misconduct and was suspended for Sunday's game, a 2-1 Kootenay loss to the host Mississauga St. Michael's Majors. It was the first suspension at a Memorial Cup since 1999.

Left wing Daniel Zweep will replace Hishon in the Owen Sound lineup. The 19-year-old had 2 goals, 6 points and 85 penalty minutes in 48 games this season.

Monday's game will pit the only two undefeated teams in the four-team tournament, with the winner guaranteed a spot in Friday's semifinal. Getting there would be easier for Owen Sound if Hishon were available. He led the team in the regular season with 49 assists and tied for the team lead with 86 points.

"You can't really replace a player like that, but we've played without him a few times this year and we've done great," Owen Sound center Andrew Shaw told reporters. "We've just got to have a lot of guys step up and play better."