The Cleveland Browns have made a lot of changes this offseason, but none have had a greater impact than the hiring of defensive coordinator Gregg Williams, according to head coach Hue Jackson.

Williams took over for Ray Horton to fix the Browns’ 31st-ranked unit. The 58-year-old coach was let go by the Los Angeles Rams in January following three seasons with the team.

In just a few weeks of offseason training sessions, Jackson can already see the defense’s improvement, and credits Williams’ emphasis on the basics.

“He is probably the biggest recruit I’ve had thus far. He’s done a tremendous job thus far,” Jackson told the team’s website. “I think the players have all gravitated to his style, truly believe in what he’s selling, and he’s one of the greatest salesman I’ve ever been around …

“I’ve never witnessed a group transform as fast because he spent two weeks not talking about scheme, he spent two weeks talking about how you play in the National Football League.”

Williams is known for his aggressive, physical style of defense from his coaching tenures with the Tennessee Titans, Buffalo Bills, Washington Redskins, Jacksonville Jaguars, New Orleans Saints, and Rams. That aggressiveness got him in trouble in 2012, when he picked up an indefinite suspension for his leading role in the Saints’ “Bountygate” scandal.

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