T.J. Watt joined his brother on the Steelers injury report Thursday.
T.J. missed with a knee injury while his brother continues to deal with a hamstring.
Linebacker Marcus Allen was also out again with a foot injury.
There was some good news though, wide receivers JuJu Smith-Schuster with a knee and Diontae Johnson with a toe, both returned to practice along with cornerback Joe Haden.
It's not known how severe T.J.'s injury is. He did participate in practice on Wednesday.
