Zarek Valentin limped onto the field for the end of the Montreal Impact's practice Monday but the right fullback appears doubtful to play in an Amway Canadian Championship match against Toronto FC.
Coach Jesse Marsch said Valentin has a bruised right calf and will be evaluated day to day. If he can't go, Jeb Brovsky is likely to start when the Impact face visiting TFC on Wednesday night.
"He'll be fine but we have to wait it out," Marsch said of Valentin, who took over the position from Brovsky after returning from duty with the U.S. under-23 team.
Valentin was hurt in the second half of Montreal's 2-0 victory over Portland on Saturday, but he was able to finish the match.
It may be the only change in the starting 11.
Marsch said the club is making the Canadian Championship a priority. Sporting director Nick De Santis addressed the players before practice about the game's importance.
"We're definitely putting a heavy emphasis on the Canadian Championship," said Marsch. "As an organization, it's been something that has brought them a lot of success and notoriety in the city.
"Nick let them know this is something very important to the club so we're going to make sure from top to bottom that we address this competition in a real way.
"We're going to go with a lot of our regular guys that we've been using," he said before adding with a laugh: "Don't tell Toronto."
The winner of the Canadian Championship earns a berth in the CONCACAF Champions League. The Impact's finest moment came in 2009 when it reached the quarter-final and won the first leg 2-0 before more than 55,000 at Olympic Stadium before losing in the return leg to Santos Laguna of Mexico.
The victory over Portland improved their home record to two wins and a draw, including their first MLS win over Toronto on April 7.
Backup goalkeeper Greg Sutton missed practice for what Marsch called "a personal day off."