What happened: Lamar Jackson exited Sunday's game after just one play due to an apparent injury. The quarterback headed straight to the locker room after taking a knee near the sideline.

Why it matters: Jackson's availability is pivotal to the AFC playoff race following a 4-3 start to the regular season. The former first-round selection drives the passing attack after totaling 21 touchdowns and 2,549 passing yards last season.

What to watch: Medical personnel will evaluate Jackson in the locker room to determine his game status and the extent of the injury.