Minnesota Vikings crowded the field as backup guard Seth Olsen was carefully tended to by 10 medical professionals about 15 yards away.

It wasn't clear if Olsen was attempting a low block or falling forward but he took a knee from Tennessee Titans linebacker Scott Solomon to the head and landed helmet-first on the turf.

Olsen suffered a concussion but he returned to the Vikings locker room after the game. He was not available to comment because he needs to pass the NFL's concussion protocol first. He indicated to several teammates though that he was fine.

The play occurred on a screen pass in the second quarter.

Players waved for trainers to come onto the field and a cart was immediately called.

During a five-minute break the medical personnel placed him on a stretcher and carted him off. Olsen lifted his left hand as he exited the field drawing an ovation from the crowd.

"It was very scary" Vikings receiver Joe Webb said. "I am very glad to see him walk around the locker room."

Sherels shines

Former Gophers cornerback Marcus Sherels who missed the preseason game last Sunday against the San Francisco 49ers to attend his father's funeral shined against the Titans setting a Vikings record with a 109-yard kickoff return for a touchdown and intercepting a pass.

"I always try to make plays" Sherels said. "Today I had my chance and I took advantage of it."

Sherels said he appreciated coach Leslie Frazier supporting his decision to attend his father's funeral and miss the Niners game.