Oklahoma City's Semaj Christon (6) reacts after an injury during the NBA game between the Oklahoma City Thunder and Brooklyn Nets at the Chesapeake Energy Arena, Friday, Nov. 18, 2016. Photo by Sarah Phipps, The Oklahoman

Semaj Christon was key for the Thunder in the final 2:59 of the third quarter Friday against Brooklyn, but suffered an injury in the process.

The Thunder outscored Brooklyn 9-4 in Christon’s 2-minute, 14-second stint filling in for Russell Westbrook. That was until Christon hit his head on Enes Kanter’s knee and had to leave the game with concussion-like symptoms.

The Thunder said Christon is currently in the concussion protocol and has a non-displaced left facial fracture. Christon can play with the fracture when he returns from concussion protocol as long as he plays with a protective mask.