Bobby Portis and Nikola Mirotic were involved in an altercation that resulted in Mirotic suffering two broken bones in his face after Portis punched him, according to sources.

Mirotic, who’s out indefinitely, was evaluated for a concussion and taken to a hospital, where he was released but was apparently a bit out of it, according to a source. The altercation began with pushing and shoving between the two before Mirotic lunged forward at Portis and Portis hit Mirotic, sending him to the floor.

“I’ve seen worse,” a witness said.

Mirotic was taken to the training room and Portis went to the other side of the floor.

Apparently the two have had testy moments since Portis entered the league in 2015. The two play the same position and have battled for minutes, with Portis often getting the short end in the rotation.

Where this leaves Portis with the Bulls for the immediate future as far as a suspension is unknown.

Mirotic does have a concussion and broken bones in his face. Expect Bobby Portis' suspension to be significant — Vincent Goodwill (@VinceGoodwill) October 17, 2017

But what was supposed to be a so-called nondescript season has suddenly put the spotlight on the players and the coaching staff, who’ll have to navigate the relationship between the two teammates.