During Texas Tech's second drive against Iowa State, Tech QB Patrick Mahomes gained a first down but took a shot from an Iowa State defender.
The following Tech drive, Mahomes ran a normal play that went for an incomplete pass, but favored his left arm.
Mahomes went down on the field but then made his way to the locker room with a trainer.
Backup QB Nic Shimonek took over after Mahomes' departure.
More information to come.