Patriots quarterback Drake Maye has exited today’s game against the Chargers with an apparent head injury.

Maye scrambled, stepped out of bounds and took a helmet-to-helmet hit from Chargers defensive back Cam Hart, and exited the game after that. Hart could have been called for an illegal hit, but the officials did not throw a flag.

On the ensuing drive the Chargers got a spectacular touchdown catch from Derius Davis to give them an early 7-0 lead. After that touchdown, Patriots veteran backup quarterback Jacoby Brissett came in to replace Maye. Officially, the Patriots haven’t ruled Maye out for the game, but it appeared that he suffered a concussion.

Maye has had a very promising rookie season since taking the starting job from Brissett, but this is the second time he has exited a game with a head injury. That has to be a major concern for Maye and the Patriots going forward.

UPDATE: Maye cleared the concussion evaluation and returned to the game.