Joel Embiid started Game 3 for the Eastern Conference semifinals against the Miami Heat after missing Games 1 and 2 with an orbital fracture.
Embiid cleared the NBA's concussion protocol and participated in the team's morning shootaround.
Embiid was listed as out to begin the day Friday, only to be upgraded to doubtful early in the afternoon after clearing the NBA's concussion protocol and participating in the team's morning shootaround.
Doc Rivers said Embiid won't have a hard minutes limit.
"There's no cap," he said. "It's all visual. We have people watching, too. Who will come to me at halftime -- hopefully not during the first half or second, during a game, though that's happened before -- and just telling me that they don't like something."
