As part of the coaching staff changes under new defensive coordinator Christian Parker, the Cowboys on Monday let three assistants go, two people with knowledge of the decision told The Dallas Morning News on Monday.
Defensive passing game coordinator/safeties coach Andre Curtis, secondary/cornerbacks coach David Overstreet II and linebackers coach Dave Borgonzi were let go by the organization.
On Monday night, Cowboys defensive line coach Aaron Whitecotton left the organization to become the Tennessee Titans’ defensive run game coordinator/defensive line coach.
Whitecotton is the defensive coordinator for the East team in the East-West Shrine Bowl game, which will take place Tuesday at The Star in Frisco.
Curtis and Overstreet led a defensive back group that gave up the second-most touchdowns (35) in the NFL in 2025. The secondary was hampered by injuries to both projected starting corners, Trevon Diggs and DaRon Bland, along with safeties Donovan Wilson and Malik Hooker.
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The Cowboys’ 2025 third-round pick, cornerback Shavon Revel, missed the start of the season recovering from ACL surgery.
The linebackers also had health issues, as middle linebacker Jack Sanborn — who signed in free agency — suffered a groin injury in October and was placed on injured reserve on Nov. 3.
Kenneth Murray, a weakside linebacker, moved to middle linebacker and, while leading the team in tackles, struggled during the season.
The defensive line group lost star pass rusher Micah Parsons a week before the start of the 2025 season, as he was traded to the Green Bay Packers. However, the Cowboys acquired two talented interior linemen in Kenny Clark (in Parsons trade) and Quinnen Williams, obtained in a trade deadline deal.
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