Philadelphia 76ers' Joel Embiid plays during Game 1 of a first-round NBA basketball playoff series against the Washington Wizards, Sunday, May 23, 2021, in Philadelphia. (AP Photo/Matt Slocum)Embiid was unable to play in the Sixers-Wizards game 4 due to right knee pain. This originally appeared on NBC Sports Philadelphia

According to a Sixers official, joel embiid injury was ruled off at halftime Monday night due to right knee pain.

He was trying to score against Robin Lopez in Game 4 of their first-round series against Washington Wizards.

In the beginning, the MVP finalist stayed in the game and played the entire first quarter. Scott then went to the Capital One Arena locker room. Dwight Howard and Mike Scott spelled Embiid during the second quarter. Scott began the second half in center.

Ben Simmons won the game with five points over Washington’s other players. He had one point and six rebounds for the game in just 31 minutes. Washington lost 122-114 to the Sixers and Washington will have another opportunity to close out the series Wednesday in Philadelphia.

Doc Rivers, the head coach, did not provide any additional information regarding Embiid’s injury after the game. He said he expected to learn more on Tuesday.

In the first three series games, Embiid averaged 29.3 point and shot 67.4 per cent from the floor. He led the Sixers to a stunning Game 3 victory. He scored a playoff record-high 36 points, shooting 14-for-18.

Cleaning the Glass found that the Sixers scored 13.0 more points per 100 possessions when Embiid was on the court, compared to when he wasn’t. In the 21 games that Embiid missed, the team was 10-11.

The thing is, it wasn’t easy to see in the first half. Embiid scored four straight baskets after returning in the second half, plowing through Hawks center Clint Capela. He also spun into a fadeaway at the baseline for two of them. He ended the quarter with 13 points and 10 rebounds. Embiid was a +16 for more than 18 minutes and made 10 of the Hawks’ 29 shots in the paint.