RENTON, Wash. — A day after he returned to the practice field, Seattle quarterback Matt Hasselbeck is again dealing with a balky back.

Hasselbeck left this morning's practice after about 45 minutes when his back began to tighten up. He returned at the start of the afternoon session to do some stretching with the team, but walked off the field and back into the locker room with the rest of the injured Seahawks.

The Pro Bowl quarterback fully participated in a practice Monday for the first time since his back stiffened following Seattle's first preseason game against Minnesota on Aug. 8. The Seahawks won 34-17.

Hasselbeck said after that practice he will play in the Seahawks' preseason game on Monday at San Diego.

Hasselbeck did not play in last Saturday's preseason game against Chicago, a 29-26 victory in overtime. Backup Charlie Frye played the entire game against the Bears.