Joel Embiid was ruled out at halftime Monday night with right knee soreness, according to a Sixers official.
He fell hard attempting to score over Robin Lopez during Game 4 of the team’s first-round series against the Wizards.
The MVP finalist initially stayed in the game, playing all but the final 36.5 seconds of the first quarter, then headed to the locker room at Capital One Arena. Dwight Howard and Mike Scott spelled Embiid in the second quarter, and Scott started the second half at center.
Ben Simmons closed the game at the five over both of those players, who totaled one point and six rebounds in 31 minutes. The Sixers lost 122-114 to Washington and will have another chance to wrap up the series Wednesday in Philadelphia.
Head coach Doc Rivers did not have any further information about Embiid's injury postgame, saying he expected to know more Tuesday.
Embiid averaged 29.3 points and shot 67.4 percent from the floor in the series’ first three games. He was especially brilliant in leading the Sixers to a blowout Game 3 win, scoring a playoff career-high 36 points on 14-for-18 shooting.
The Sixers in the regular season were 13.0 points better per 100 possessions with Embiid on the court than with him off it, per Cleaning the Glass. The team went 10-11 in the 21 regular-season games he missed.
Embiid suffered a left knee bone bruise on March 12 in Washington, an injury that sidelined him for 10 games. The Sixers managed to go 7-3 during that stretch.