What happened: Kyle Trask takes Carolina's third-quarterback slot while Haynes King is expected to miss time with a hamstring injury. The signing follows King's decisive performance in the preseason opener.

Why it matters: The move preserves a three-quarterback setup during preseason. King's absence limits his opportunity to build on Thursday's game-winning performance.

What to watch: King's practice status will determine when he can resume preseason work. Trask's first reps will show how quickly he enters the rotation.