Celtics' Robert Williams out for Game 3 with knee soreness
Williams appeared in the first two contests this series but previously missed six games this postseason with knee ailments. The big man underwent surgery to repair a torn meniscus in his left knee near the end of March and missed four weeks.
The All-Defensive second-team selection averaged 10 points, 9.6 rebounds, 2.2 blocks, and 0.9 steals while averaging 29.6 minutes across 61 regular-season appearances. Williams' production has tailed off slightly in seven postseason tilts, which can be partially attributed to playing fewer minutes per game (21.3) and his lingering knee troubles.
The Celtics and Heat entered Game 3 at TD Garden with the series tied 1-1.