The Boston Celtics earned one of the most important impressive victories of the playoffs without Robert Williams III. As the league’s most competitive second-round series shifts to Boston for a best-of-three between the Celtics and Milwaukee Bucks, there’s a chance Ime Udoka’s team will be back at full strength.

The Celtics revealed their official injury report for Wednesday’s pivotal Game 5, with Williams III listed as questionable due to left knee soreness.

The high-flying big man was a late scratch in Game 4, being replaced in the starting lineup by Grant Williams. Boston used an utterly dominant fourth quarter to pull away from Milwaukee for a 116-108 victory, with Al Horford and Derrick White picking up slack left by the absence of its starting center.

He’d previously missed the first two games of the playoffs after sustaining a torn meniscus in his left knee in late March. Williams III returned for Game 3 of his team’s first-round sweep of the Brooklyn Nets, starting every subsequent postseason game until feeling discomfort again on Monday morning.

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“He had some soreness today,” Udoka said prior to Game 4, per ESPN’s Andrew Lopez. “Just kind of flared up. Came out of nowhere. He didn’t feel anything yesterday or during the game. It wasn’t an incident. Just a little flare-up, it got irritated trying to warm up.”

Udoka went on to say that he anticipated Williams III would be healthy enough to play in Game 5.

Whether or not he’s active on Wednesday, expect Boston to continue relying on lineups featuring White and Grant Williams. The suffocating interior defense of Williams III has made an impact against Giannis Antetokounmpo and company, but Udoka’s decision to space the floor with five shooters late in Monday’s contest made life much easier for the Celtics offensively.

Game 5 tips off from TD Garden at 4:00 p.m. (PST) on Wednesday.