Frank Dancevic retired down 6-2, 1-0 against Tobias Kamke in the semifinals of the Granby challenger.
Dancevic, who cut his thigh when he ran into a scoreboard during a qualifying match in Altanta a week ago, said he began feeling the effects of the injury.
"I wasn’t able to push off,” said Dancevic. “It’s been bothering me for a couple of days now and I actually thought about not playing today, but this is one of my favourite places to play and I owed it to the fans to give it a try.”
Dancevic plans to play the Vancouver challenger next week, having received a special exemption into the draw after reaching the semifinals in Granby.