Philadelphia swingman Danny Green is expected to miss at least two weeks with a right calf strain.
The 76ers said an MRI on Saturday confirmed the extent of the injury.
Green, 33, sustained the injury during the first quarter of Philadelphia's 127-111 victory over the Atlanta Hawks in Game 3 of the Eastern Conference semifinal series. The 76ers hold a 2-1 lead in the best-of-seven series heading into Game 4 at Atlanta on Monday.
Matisse Thybulle and Furkan Korkmaz are likely candidates to replace Green in the starting lineup.
Green averaged 9.5 points, 3.8 rebounds and 1.7 assists in 69 games during the regular season.
A three-time NBA champion, Green has averaged 9.0 points, 3.5 rebounds and 1.6 assists in 757 career games (681 starts) with the Cleveland Cavaliers, San Antonio Spurs, Toronto Raptors, Los Angeles Lakers and 76ers.
--Field Level Media