Fred Jackson may miss a month

Buffalo Bills running back Fred Jackson could miss up to a month after suffering a groin injury in Sunday's 17-16 win over the Minnesota Vikings.

The injury will not require surgery.

"It's not as bad as it could have been," Jackson said in a weekly appearance Monday on WGR 550 in Buffalo. "It's typically a four-week injury. But we'll try to do some things to get it sped up.

"I like to think of myself as somebody who can come back before typical. It's just gonna be on me to get in there and rehab and see the team doctors and do what it is they want me to do."

Meanwhile, fellow Bills running back C.J. Spiller underwent surgery Monday on a broken collarbone.

"We've been in contact all morning with him. He's in pretty decent spirits for what's going on," Jackson said. "We're praying for him to get through surgery OK ... and we'll see what happens after that."