Derek Brunson to Step in for Karlos Vemola at UFC 155

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In another change to the final card of the year, Derek Brunson has been signed by the UFC to meet Chris Leben at UFC 155: Dos Santos vs. Velasquez II. The change was reported by late Tuesday night.

Leben was originally set to face Karlos Vemola, but a training injury has knocked Vemola out of the bout. Leben and Brunson will be the first fight on the main card from Las Vegas on December 29.

Leben (22-8) has posted a 12-7 record inside the Octagon, and will be returning from a suspension. He lost to Mark Munoz in 2011, and failed his post-fight drug test.

Brunson (9-2) will be making his Octagon debut. He owns seven victories via first round stoppage in his career.

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