According to Todd Archer of ESPN, the Cowboys have activated DE David Irving after serving his four-game suspension for violating the league’s performance-enhancing drugs policy. Irving’s PED suspension stems from him taking a supplement that he had a marketing deal with. He was appealing the case, but his suspension was upheld. Irving, 23, originally signed on with the Chiefs as an undrafted free agent out of Iowa State back in 2015. He was waived at the start of the regular season and later added to the Chiefs’ practice squad.