Gary Brown, who coached the Cowboys running backs for seven seasons, passed away Sunday at the age of 52.

As reported by Clarence Hill Jr. of the Fort Worth Star-Telegram, Brown had been battling cancer.

Brown played running back in the 1990s, spending time with the Oilers, Chargers, and Giants over eight seasons.

After returning to both the high school and college ranks to begin a coaching carer, he worked his back to the pros on Eric Mangini’s staff in Cleveland in 2009.

The Cowboys hired Brown in 2013; he was in Dallas through the 2019 season.

He most recently served as running backs coach for Wisconsin, hired in Madison in March 2021.

He did not travel with the Badgers to their bowl game this past December due to cancer treatments.

Brown had been diagnosed twice with cancer, the first time while he was in Cleveland.

He underwent chemotherapy and surgery and was given a clean bill of health.

He received his second diagnosis just after the Cowboys’ coaching change in early 2020. A malignant tumor was found near Brown’s pancreas.

After taking a year off, Brown joined the Wisconsin staff for the ’21 season, even as he went through immunotherapy.