Ray Allen jammed his left ankle in a loss to the Jazz on Friday and is questionable for the opener of the Celtics' five-game road trip, according to the Boston Herald.

The team has officially listed the injury as a bruised heel.

"It was a tough blow, especially going on the trip," Doc Rivers said. "I?m hoping he?s healthy for that, but I?m not going to change my rules. He?s going to have to be extremely healthy for me to play him, and if he can?t play, somebody else is going to have to step up."

Boston begins their trip in Milwaukee on Saturday night before traveling to San Antonio on Monday night.