From PFF:
Biggest winners
1. Rams’ defensive line
The rich get richer. The Rams already figure to have one of the best defensive lines in the NFL, with the three-stud combo of Aaron Donald, Robert Quinn, and Michael Brockers alone. That’s why when a second-year undrafted rookie from Northwest Missouri puts on a clinic in the first half against Dallas, some eyes start to open. In fact, DE Matt Longacre collected the highest pass-rushing grade and run-defense grade of any NFL edge defender in Week 1 of the preseason. In 36 snaps, he recorded two hits and three hurries.