NFL analytics company Pro Football Focus released the top-five grades for pass protection efficiency by offensive guards, ranked from high to low: Dallas Cowboys OG Zack Martin (98.4), then-Carolina Panthers OG Andrew Norwell (98.3), Pittsburgh Steelers OG David DeCastro (98.1), Cincinnati Bengals OG Clint Boling (98.0) and Houston Texans OG Senio Kelemete (98.0).