ORCHARD PARK, N.Y. -- Observed and heard in the locker room after the Minnesota Vikings' 17-16 loss to the Buffalo Bills at Ralph Wilson Stadium on Sunday:

Zimmer: Not coaching was never a thought: Coach Mike Zimmer had a "minor procedure" to deal with kidney stones on Friday but told Fox's broadcast crew in a production meeting that he'll need more work done to remove them on Tuesday. He coached in some pain on Sunday, but Zimmer said there was never any doubt he'd be able to coach on Sunday. "I'll be all right," Zimmer said.

Greenway on fourth down: "You can't have it" -- The mood was somber in the Vikings' locker room after a loss in which the team gave up a game-winning touchdown with one second left. It was a defeat eerily similar to the five games where the Vikings blew last-minute leads last season, and the Bills extended this drive on a couple of key plays: a fourth-and-20 where Kyle Orton found tight end Scott Chandler just behind Chad Greenway, and a third-and-12 that got the Bills to the Vikings' 20. "You check off every thing you want to do, you do it -- other than maybe stopping the run," Greenway said. "The game wasn't over, and they were able to make some big throws at the end. The [fourth-and-20], you can't have it. It's a situation where you've got to get off the field. I thought I was in a good spot. Perfect throw and catch. That's what sucks about this game: You play good for a long time, and you end up losing."

Ducasse felt "sharp pain" in knee: Guard Vlad Ducasse, who was already filling in for injured starter Brandon Fusco, left the game with a knee injury late in the first quarter, on the same play that also saw center John Sullivan leave with a concussion. Ducasse wasn't sure how he hurt his knee; "I just went to get up off the ground, and there was a sharp pain in my knee." Ducasse did not return, and Mike Harris played the rest of the game at right guard.