The Washington Commanders are making changes on the defensive side of the football after being blown out by the Dallas Cowboys on Thanksgiving. 

Defensive coordinator Jack Del Rio and defensive backs coach Brent Vieselmeyer were fired on Friday. 

Ron Rivera speaks with officials

Washington Commanders head coach Ron Rivera talks with the referees prior to the game against the Dallas Cowboys at AT&T Stadium in Arlington, Texas, on Thursday. (Kevin Sabitus/Getty Images)

"Today I relieved Jack Del Rio and Brent Vieselmeyer of their duties," head coach Ron Rivera said in a statement shared by the team on X. "I appreciate all that they contributed to the organization over the past four seasons and I wish them all the best moving forward." 

DOLLY PARTON STEALS SHOW ON THANKSGIVING, DRESSES AS DALLAS COWBOYS CHEERLEADER FOR HALFTIME PERFORMANCE

Rivera is expected to be in charge of Washington’s defense for the rest of the season, according to multiple reports. 

The Commanders were beaten soundly on Thursday by the Cowboys, with Washington allowing 25 points in the fourth quarter of the 45-10 loss, seven of which came on an interception return for a touchdown by the Dallas defense.  

Del Rio’s defense allowed 431 total yards to Dallas, including 331 passing and four touchdowns from Cowboys quarterback Dak Prescott

Jack Del Rio before facing Atlanta

Washington Commanders defensive coordinator Jack Del Rio looks on prior to the start of the game against the Atlanta Falcons at Mercedes-Benz Stadium in Atlanta on Oct. 15. (Rich von Biberstein/Icon Sportswire via Getty Images)

CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COM

The loss on Thanksgiving was the eighth in the last 10 games for Washington after starting the year 2-0. 

Following the game, Rivera was asked if he was worried about his job security. 

"I've told you before I'm not worried about anything. All I'm going to do is do my job and see how things go," he said. "That's the only thing I can do."

Rivera was also asked about possible staff changes following the loss, and declined to get into a discussion over whether he would make any moves. 

Jack Del Rio and Ron Rivera on the sideline

Washington Commanders defensive coordinator Jack Del Rio, left, and head coach Ron Rivera look on during the game against the Philadelphia Eagles at Lincoln Financial Field in Philadelphia on Oct. 1. (Mitchell Leff/Getty Images)

CLICK HERE TO GET THE FOX NEWS APP

"I’m not going to get into that stuff," he said. 

The Commanders are near the bottom of the NFL in yards allowed per game (377.7) and points allowed per game (29.2). 

Washington will face the Miami Dolphins in Week 13.