Paul Pierce is the latest Celtic to cause concern because of an injury.
Pierce, who averages a team-best 21.5 points per game, was a game-time decision last night because of a back strain, and scored the winning hoop in Boston's 92-91 decision over the Heat.
The five-time All-Star was injured in Wednesday's win over New Jersey, and didn't participate in yesterday's shootaround. Pierce, however, gutted it out for 30 minutes but struggled offensively, making 5 of 12 shots for 12 points and committing four turnovers.
"I didn't even know if I was going to play tonight," Pierce said. "But it's getting a little better and I decided to give it a go."