Spiller stumbled at about the 2-yard line before he met Brandon Spikes, who came flying in from his linebacker spot. Spikes not only knocked Spiller sideways, he jarred the ball loose. It was picked up by Wilfork, who rumbled a couple of yards in the other direction before being brought down. While there wasn’t enough time at the end of the first half for the Patriots to do anything about it, the fact that New England was able to keep Buffalo out of the end zone at the end of the first half proved to be a big momentum shift in the game.