Quarterback Caleb Rowe takes a hit during Indiana’s 47-28 win over Maryland at Byrd Stadium on Nov. 21, 2015.

With just more than three minutes left in the second quarter, Terrapins football quarterback Caleb Rowe scrambled to his left and took a hit to the head as he dove to the turf. He was slow getting up and signaled to the sideline for a substitute.

Backup Shane Cockerille came in for three plays while Rowe appeared to be evaluated by a team official on the sideline. Rowe returned for six snaps and scrambled on one play that concluded with his head sliding along the turf.

He finished the drive before sitting out the second half with a concussion, interim coach Mike Locksley said after the game.

When asked if he knew when the concussion happened and why he was sent back in after the initial hit, Locksley said:

“I don’t [know when he suffered the concussion],” Locksley said. “But I do know our athletic administration has protocols for concussion. I know the Big Ten has spotters upstairs that is involved.

“I don’t know what had happened. I just recall them telling me going into halftime that he was out. I know that he came out for a play but obviously the medical people and the spotters and all those people that’s involved followed the protocol that we have in place.”

The Big Ten revised its concussion protocol in the offseason, with each game now having an independent medical spotter stationed in the replay booth for all conference games.

This new spotter is an addition to the athletic trainers that each team already has.