The Dallas Cowboys will be without their best pass rusher for the first quarter of the upcoming season.
NFL Network Insider Ian Rapoport reported on May 23 that Irving's suspension stemmed from a supplement produced by a company with which the defender had a marketing deal. Irving's appeal of the suspension was denied, making the ban official on Wednesday.
Irving emerged late in the 2016 season as a forceful presence off the edge for a Cowboys defense that sorely lacked a reliable pass rusher. The defensive lineman recorded four sacks on the season, with three coming in Weeks 15 and 16, and showed plenty of unexpected promise heading into 2017.