John Kosko
NFL Contributor • View all analysts
Recent Articles
The Browns boast the NFL’s best defensive line in 2025, anchored by Defensive Player of the Year favorite Myles Garrett, who leads the league with a 92.7 overall grade while ranking among the top edge defenders against both the run and the pass. Even after losing Maliek Collins to injury, Cleveland’s depth — highlighted by Alex Wright, Isaiah McGuire and a surging rookie Mason Graham — has kept the unit dominant from top to bottom.
Fri, 02 Jan 26 10:30:00 +0000
Cooper DeJean continues to separate himself at the top of the coverage metrics, pairing a league-leading advanced coverage grade with elite playmaking production, including 18 pass stops and 12 forced incompletions. Meanwhile, Jamel Dean remains the model of consistency, allowing a catch on just 45.5% of targets with a 46.9 passer rating allowed.
Fri, 02 Jan 26 10:15:00 +0000
Elite defensive lines can change the course of a game by applying pressure, forcing hurried throws and creating turnovers while also stifling run plays to control the tempo. This season, we will closely monitor NFL defensive line play. Unlike our offensive line rankings, which in some cases consider previous-season rankings, these rankings will be based purely on 2025 play.
Thu, 11 Dec 25 14:45:00 +0000
These rankings utilize PFF All-Coverage charting and data to rank the cornerbacks, providing insights into PFF coverage grades and our Successful Coverage Over Expected (SCOE) metric, which measures how well each coverage defender performed above expectations on non-targeted coverage snaps.
Thu, 11 Dec 25 14:00:00 +0000
Myles Garrett continues to anchor one of the NFL’s most dominant defensive lines as he chases the single-season sack record, even while injuries to Maliek Collins and Alex Wright threaten to chip away at the unit’s early-season momentum. Garrett’s pursuit of history, combined with career-best years from his supporting cast before the injuries, has defined Cleveland’s defensive identity throughout 2025.
Thu, 04 Dec 25 14:46:13 +0000
Cooper DeJean continues to hold the top spot after another strong outing, allowing just three catches for 29 yards and pushing his total to 22 combined forced incompletions and pass stops. Jamel Dean returned from injury and immediately resumed his high-level play, giving up only one catch on four targets and maintaining a league-best 41.5% completion rate when targeted.
Thu, 04 Dec 25 14:00:00 +0000
The Browns' defensive line ranks first in every major PFF metric through 12 weeks of the 2025 season. They own the league’s top overall grade, pass-rush grade and run-defense grade, and they also lead all defensive lines in PFF WAR. On the field, the dominance shows up just as clearly: they have the most sacks and the most defensive stops of any unit in the NFL.
Thu, 27 Nov 25 12:15:00 +0000
The Eagles defensive line is starting to peak in mid-November, with Moro Ojomo and Jordan Davis anchoring a unit that produced five batted passes and 16 total pressures in a dominant Week 11 showing. Meanwhile, the Browns continue to set the league’s standard up front, powered by Myles Garrett’s 10 sacks over his last three games and a defensive line in which every regular contributor holds an overall grade of 66.1 or better.
Thu, 20 Nov 25 14:00:00 +0000
Sauce Gardner held onto the top advanced coverage grade in Week 11 even through the Colts’ bye, while Jamel Dean continued a career year highlighted by elite efficiency numbers. Together, they headline this week’s look at the NFL’s most dominant cornerbacks through the lens of PFF’s advanced coverage metrics.
Thu, 20 Nov 25 13:30:00 +0000Bio
John joined PFF in July 2014, and serves as an NFL Analyst. John is also a former Kansas Football safety. He obtained a Bachelor’s degree in Liberal Arts and Sciences Studies.