Boston Celtics center Robert Williams III (44) reacts after play during the second quarter against the Golden State Warriors during game four of the 2022 NBA Finals at TD Garden. Paul Rutherford-USA TODAY Sports

Watch: Robert Williams receives standing ovation from Celtics' fans in season debut

Boston Celtics center Robert Williams made his long-awaited return to the floor on Friday night, making his season debut against the Orlando Magic. 

Checking into the game with 7:03 remaining in the first quarter, Celtics' fans at TD Garden showed how much they missed Williams, giving the 25-year-old a rousing, standing ovation. 

Williams didn't wait long to make an impact, slamming home an alley-oop from Marcus Smart only a minute and a half into his 2022-2023 season. 

The fifth-year pro underwent arthroscopic surgery on his left knee in September. Williams needed surgery on the same knee in March to repair a torn meniscus, but he returned in time for the postseason. 

The addition of Williams should give a significant boost to the Celtics, who entered play on Friday night with a game-and-a-half lead over the Milwaukee Bucks for the top spot in the Eastern Conference.

Last season, Williams averaged career highs in points (10), rebounds (9.6), blocks (2.2), assists (2.0), field goal percentage (.736), and free throw percentage (.722). 

Malcolm Brogdon told reporters on Friday that he noticed how hard Williams has worked to get back on the court and believes he'll make a "huge impact" for the Celtics. 

"He's still a young guy who takes his work serious, takes the game serious," Brogdon said. "He knows how good this team is without him, and he knows how good this team will be with him. He's been diligent in this process, and I applaud him for that."

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