Brett Favre misses 2nd straight practice

EDEN PRAIRIE, Minn. -- Brett Favre has missed his second straight day of practice. Vikings coach Leslie Frazier says his quarterback is still showing symptoms from a concussion.

Frazier says Favre demonstrated no improvement during his concussion test Thursday. The coach, however, declined to rule out Favre for Sunday night's game against Philadelphia.

Favre was injured in the second quarter Monday night when Bears defensive end Corey Wootton slammed him to the turf. Frazier says no Vikings player this season has played the week after a concussion and Favre still must improve a lot before he is cleared.

Frazier says the Vikings will be cautious with Favre in hopes of avoiding long-term harm.