Taj Gibson suffered a sprained left knee early in the fourth quarter of the Bulls’ 102-72 defeat Sunday night. Gibson crumpled to the floor, stayed down and eventually stayed in the game in the loss to the Thunder, but during a timeout at the 9:25 mark of the period, he was briefly examined by the Bulls’ training staff and exited the contest, replaced by backup forward Vladimir Radmanovic. “I don’t know,” Bulls head coach Tom Thibodeau said, when asked about Gibson’s status. “I haven’t talked to Fred [Tedeschi, the Bulls’ head trainer] yet.” Gibson received treatment after the game and was unavailable to the media.