Antonio Silva to face Cain Velasquez at UFC 146

When Frank Mir was given a title shot at UFC 146 in place of Alistair Overeem, several dominoes started to fall in the UFC heavyweight division. Mir was supposed to face Cain Velasquez in Las Vegas on May 26. Since he's fighting Junior dos Santos, Velasquez will face Antonio "Big Foot" Silva, who will be making his UFC debut after a career in Strikeforce and Elite XC. Roy Nelson, who was supposed to fight Silva, is now opponent-less, but is expected to remain on the card.

Got that?

As it stands now, UFC 146 still has an all-heavyweight main card, but the UFC has to scramble to find an opponent for Nelson for a bout that is just 34 days away. Here are all the main card bouts:

Junior Dos Santos vs. Frank Mir
Antonio Silva vs. Cain Velasquez
Roy Nelson vs. TBA
Shane Del Rosario vs. Gabriel Gonzaga
Mark Hunt vs. Stefan Struve

[ UFC 145 video: Impromptu gymnastics competition breaks out inside Octagon ]

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