76ers' Joel Embiid out Tuesday with ankle injury

The Philadelphia 76ers say star big man Joel Embiid won't play Tuesday against the Phoenix Suns because of a left ankle injury suffered over the weekend.

There's optimism that the injury isn't serious and that he'll be back soon, sources told ESPN's Adrian Wojnarowski.

The Suns game will be Philadelphia's sixth in the NBA's restart. They finish up with Toronto on Wednesday and Houston on Friday.

The Sixers said Embiid will undergo treatment and evaluation on the ankle Monday night.

Embiid left Sunday's game against the Portland Trail Blazers in the first quarter with the injury.

Also Monday, 76ers guard Ben Simmons underwent surgery to have a loose body removed from his left knee and will be re-evaluated in two weeks. He is expected to miss the remainder of the season.