WASHINGTON (AP) —Philadelphia 76ers lost NBA MVP finalist Joel Embiid to what the team called a sore right knee late in the first quarter Monday night, they lost their lead — and their chance at the franchise’s first playoff sweep in 36 years.

With Embiid gone for most of Game 4, Bradley Beal’s 27 points, Russell Westbrook’s 12th career playoff triple-double and Washington’s strategy of fouling Ben Simmons whenever possible down the stretch all helped the Wizards beat the 76ers 122-114 to cut Philadelphia’s series edge to 3-1.

Embiid headed to the locker room late in the first quarter of Game 4 of the 76ers’ Eastern Conference playoff series against the Washington Wizards after taking a hard fall and later was ruled out for the rest of the night because of a sore right knee.

The Sixers posted on Twitter at halftime that Embiid would not return because of the knee. Mike Scott took Embiid’s place in the lineup to begin the second half.

Embiid did not appear at all in the second quarter, which ended with the 76ers ahead 61-60.

He had eight points and six rebounds in 11 minutes when he departed.

The NBA MVP finalist wound up on the floor behind the baseline after having his shot blocked by Washington’s Robin Lopez on a drive to the basket in the first quarter.

After staying down for a moment, a wincing Embiid rose and then put his hand on his lower right back.

He remained in the game for the time being, before eventually heading to the locker room in the last minute of the period.

Embiid came into the night averaging more than a point per minute in the best-of-seven series, which Philadelphia led 3-0.

He scored a postseason career-high 36 points in 28 minutes in a 29-point win for the 76ers in Game 3 on Saturday