Texas Tech quarterback Patrick Mahomes II, on pace to break the NCAA single-season passing record, left Thursday night's 55-19 home win over Kansas in the third quarter with an injury and did not return.
Mahomes landed hard on his throwing shoulder after a 32-yard run when he was tackled by Jayhawks Fish Smithson and Isaiah Bean. Trainers tended to Mahomes on the field. His right shoulder was examined on the sideline, and he left for the locker room as backup Nic Shimonek took over for the Red Raiders.
Shimonek finished 15-of-21 for 271 yards and four touchdowns.
Tech coach Kliff Kingsbury said he did not know the severity of Mahomes' injury.
"We've got to get him looked at more extensively," Kingsbury said.
Through three games, Mahomes completed 71.2 percent of his passes for 1,493 yards -- a nation-leading 497.7-yard average. His 14 touchdowns ranked second nationally.
Before the injury on Thursday against Kansas, the 6-foot-3, 230-pound junior was 27-of-34 for 277 yards with four touchdowns and one interception while leading Tech to a 27-19 lead. He was sacked three times.
Shimonek directed the Red Raiders to scores on his first two possessions.