Hasselbeck said after Thursday's practice that he feels similar to how he felt at this point a week ago. The Seahawks host Detroit on Sunday.
Seattle coach Jim Mora said Hasselbeck was a bit beat up after playing in all of last weekend's 38-17 loss at Dallas.
Hasselbeck was crumpled on the turf after a hit in the third quarter but finished the game.
Seneca Wallace ran the first-team offense on Wednesday, but it was Hasselbeck leading the charge on Thursday.