Boston Celtics point guard Marcus Smart will miss Monday night's Game 4 of the Eastern Conference finals against the visiting Miami Heat due to his sprained right ankle.
Smart sustained the injury in Game 3 and the ankle remained swollen some 48 hours later.
In another note, big man Robert Williams III is set to play after missing Game 3 with his left knee injury.
Miami holds a 2-1 lead in the best-of-seven series.
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