Boxing has long been called the Theater of the Unexpected, but mixed martial arts can lay claim to that title as well, because with so many ways to win, there are also so many ways for big favorites to lose. As we hit the halfway point of 2013, here are the biggest upsets of the year thus far . . . Click here for more on UFC.com
. . . .
Coming up next: UFC 162: Silva vs. Weidman is LIVE on PPV from Las Vegas on Saturday, July 6 at 10 PM ET / 7 PM PT. Click here for more