Washington Commanders defensive end Dorance Armstrong finds Detroit Lions quarterback Jared Goff for an 11-yard loss.

Inside 50 yards, players move to the “GreenZone,” an engineered artificial turf area that Armstrong contends reacts more realistically to spin and rollout than any grass they attempted to install.

We mentioned divots. The turf is deep enough to withstand even a hacker’s divot—which Armstrong admits he tested himself without really intending to—and Coffman said recovery time for ...