What happened: The evaluation centers on how smoothly Mendoza manages the huddle and operates at the line of scrimmage. The rookie gets his first NFL preseason test tonight.
Why it matters: Pre-snap command offers an early measure of Mendoza's adjustment to an NFL operation. His performance will help shape his workload through the rest of the preseason.
By the numbers: Mendoza went No. 1 overall in April, opened camp with the second-team offense and received first-team reps Saturday.
What to watch: Watch Mendoza's pace between the huddle and the line, along with his control before the snap.