Tuitt was placed on injured reserve for an undisclosed reason Wednesday, Teresa Varley of the Steelers' official site reports.
Tuitt racked up a career-high 11 sacks across 15 appearances during the 2020 campaign, but he'll be sidelined for at least the first three weeks of the season in 2021. The specifics of the 28-year-old's injury haven't yet been revealed, but Henry Mondeaux and Isaiahh Loudermilk could see a slight uptick in playing time in his absence.