Vikings quarterback Brett Favre has a stress fracture in his left ankle that could end his NFL-record durability streak at 291 consecutive games started. Minnesota coach Brad Childress said Monday an MRI on Favre's foot revealed the fracture and an "avulsion" fracture in the calcaneus, which is the heel bone. Favre had arthroscopic surgery on the ankle in May, and he received a series of lubricating injections in the joint at the beginning of the season. The Vikings will face the Patriots in New England on Sunday afternoon.