Normally, the UFC's year-end event is the biggest card of the year. Past events have featured Anderson Silva vs. Chris Weidman II, Cain Velasquez vs. Junior dos Santos II, Brock Lesnar vs. Alistair Overeem and more.
However, this year it looks like UFC 178 on September 27 has a chance of being the biggest card of the year. The main event is a rematch between current light heavyweight champion Jon Jones and the man who gave him his toughest fight yet, Alexander Gustafsson.
When these two first met at UFC 165 in 2013, Jones walked away with an incredibly close unanimous-decision victory (48-47, 48-47, 49-46).
In addition to that fight, a former champion is making his return, a rising title contender looks to keep his momentum and a key fight takes place in the women's bantamweight division.
Let's take an early look at the biggest card of 2014: UFC 178.