Somehow we’re ranked 6th overall in RSWR.
The definition:
In run stop win rate, a defender can earn a win by doing any of the following: beating his blocker so he's in better position to stop the runner; disrupting the pocket or running lane by pushing his blocker backwards; containing the runner such that he must adjust his running lane; or recording a tackle within three yards of the line of scrimmage. If a defender earns a run stop win, his blocker earns a loss, and vice versa.
If anyone else has a guess, step in.