Steelers DE Stephon Tuitt has announced his retirement. The 29-year-old sat out the 2021 season while dealing with a knee injury and the death of a younger brother. Teammates had indicated they anticipated him returning this year. Pittsburgh loses the starting DE opposite Cameron Heyward. But the team returns Chris Wormley, last year's primary fill-in, and added DeMarvin Leal in Round 3 of the NFL Draft.