What happened: Jared Young will miss the remainder of the season with a concussion sustained Thursday against Philadelphia. Medical staff carted the first baseman off the field after a collision with Nolan McLean, who accidentally struck Young in the head with his knee during a ground ball play.

Why it matters: The diagnosis officially ends Young's campaign with less than two weeks remaining in the regular season. Paramedics immobilized him on the infield dirt as a precaution, though he gave a thumbs-up upon exiting. Hospital imaging subsequently ruled out brain bleeding and severe trauma.

What to watch: Medical personnel will monitor his recovery through the standard concussion protocol.