When the Steelers announced their 53 man roster for the 2021 season, the defensive linemen represented the position group with the greatest depth, totaling eight players:
DE: Cameron Heyward, Stephon Tuitt, Chris Wormley, Isaiahh Loudermilk, Henry Mondeaux
NT: Tyson Alualu, Isaiah Buggs, Carlos Davis
On September 1st veteran powerhouse Stephon Tuitt was placed on IR following knee surgery which was reported to be a minor procedure, a planned move and clearly why they started with eight. The team made it clear they were expecting him back at some point, having just restructured his contract and converting some of his salary to signing bonus to create cap space.