Everybody loves an underdog, and in the first half of 2013, MMA fans were treated to a handful of upsets.
From Chris Weidman's improbable knockout against UFC legend Anderson Silva, to King Mo Lawal's incredible loss to Emanuel Newton at Bellator 90, there were plenty of fights to leave spectators with their jaws dropped.
The biggest upsets—the ones that made this list—have been determined by a number of factors. The most basic way to determine an upset is the betting line for a fight. However, instances such as Weidman's win over Silva, though not a huge upset in terms of odds, was a major upset nevertheless—Silva hadn't lost prior to UFC 162 in the promotion.
Have a look at the biggest upsets from the first half of 2013.
*While UFC 162 technically took place in the 2nd half of the year, the event has been included in our mid-year awards because it's on everybody's mind.
**Odds courtesy of Bovada Sportsbook