Jaguars' Trevor Lawrence, Foyesade Oluokun Reveal First Impressions of Ryan Nielsen

© Mark J. Rebilas-USA TODAY Sports Jaguars' Trevor Lawrence, Foyesade Oluokun Reveal First Impressions of Ryan Nielsen What do two Jaguars captains think about the newest defensive coordinator? Author: John Shipley Apr 17, 2024 There is a new sheriff in town when it comes to the Jacksonville Jaguars' defense. New defensive coordinator Ryan Nielsen is still in the infancy stages of his tenure, replacing former defensive coordinator Mike Caldwell earlier this offseason. But it hasn't taken long for Nielsen to leave an impression on his new locker room as offseason workout programs begin. "I talked with Coach Nielsen [Defensive Coordinator Ryan Nielsen] before this, before the extension and everything.