Cowboys to make their 3rd appearance on HBO's 'Hard Knocks'
Dallas Cowboys running back Ezekiel Elliott (21) warms up during an NFL football team practice Wednesday, June 9, 2021, in Frisco, Texas. (AP Photo/LM Otero)
Dallas Cowboys quarterback Dak Prescott (4) stands with head coach Mike McCarthy as they watch drills during an NFL football team practice Tuesday, June 8, 2021, in Frisco, Texas. (AP Photo/LM Otero)
Dallas Cowboys quarterback Dak Prescott (4) cools off during NFL football practice in Frisco, Texas, Thursday, June 3, 2021. (AP Photo/Michael Ainsworth)