PHOENIX --Three-time All-Star Khris Middleton sprained his left ankle in the first quarter of the Milwaukee Bucks' 114-106 loss to the Phoenix Suns on Thursday night and was ruled out for the rest of the game.

Bucks head coach Doc Rivers said X-rays on Middleton's ankle were negative.

Middleton twisted his ankle when landing on Suns forward Kevin Durant's foot after he attempted a jumper. Durant was called for a foul, and it was upgraded to a flagrant foul 1 after officials judged that Durant didn't give Middleton space to land.

Middleton stayed in the game to shoot his free throws but was limping and eventually went back to the locker room.

The Bucks were already without star point guard Damian Lillard, who missed the game with a left ankle sprain.

Middleton, 32, is averaging 15 points, 5.1 assists and 4.3 rebounds this season.

The Associated Press contributed to this story.