Though he has only played about two-thirds of the defensive snaps this season, rookie outside linebacker Courtney Upshaw has subtly been a pretty impactful run defender for a team that has struggled to tackle running backs. Upshaw is tied for fifth on the injury-riddled unit with 57 tackles, and his seven tackles for a loss lead the Ravens. He has missed just five tackles, according to Pro Football Focus, though four have come in the past three weeks. However, they say he had three defensive stops -- they define that as forcing an offensive failure, like tackling a runner after a minimal gain or knocking down a pass -- against the Broncos, and eight in the past three weeks. With 29 of his 34 tackles resulting in a stop on 281 snaps against the run, Upshaw is second among 3-4 outside linebackers with a run stop percentage of 10.3 percent.