Pro Football Focus is considered a great resource for grading players on a snap by snap basis. They recently released their rankings of the top 5 players at each position, and there are some Ravens prominently ranked:
Top 5 Interior Defenders by PFF Run Defense Rating: 1. D. Harrison 93 2. M. Dareus 92 3. B. Williams 91 4. J. Watt 90 5. S. Richardson 90
— Pro Football Focus (@PFF) September 2, 2015
Top 5 Edge Defenders by PFF Run Defense Rating: 1. K. Mack 93 2. V. Miller 91 3.