Kevin Kolb (turf toe, foot) will be doubtful for Sunday's game against the 49ers, according to NFL Network's Jason La Canfora. As expected. John Skelton, who is 2-0 while replacing Kolb, will get a chance to pull off another road upset in San Francisco. If he does that, it will be extremely difficult for coach Ken Whisenhunt to turn back to Kolb. In seven starts this season, Kolb posted a 1-6 record and 77.8 passer rating.