Paulo Thiago at the moment he knocks out Koscheck. Photo: Josh Hedges

Originally scheduled to face Josh Koscheck at the February-6 UFC 109 event in Las Vegas, Paulo Thiago will now have another opponent ahead of him. Koscheck was injured in training and will be replaced by Mike Swick.

Swick was on a four-fight winning streak until his loss to Dan Hardy at UFC 105, in a match deciding the next challenger to the welterweight title, now held by Georges St-Pierre; while Paulo Thiago comes in off a win over Jacob Volkmann, at UFC 106. The Koscheck fight would have been a rematch of their first encounter, where Paulo knocked the American out in the first round, at UFC 95.

In the evening’s main event, Mark Coleman faces Randy Couture. Also on the main card, Demian Maia encounters Dan Miller, Nate Marquardt fights Chael Sonnen and Matt Serra battles Frank Trigg. Jiu-Jitsu black belt Ronys Torres makes his debut for the organization against Melvin Guillard.

Check out the current card:

UFC 109
February 6, 2010
Las Vegas, Nevada

Mark Coleman vs Randy Couture
Mike Swick vs Paulo Thiago
Demian Maia vs Dan Miller
Nate Marquardt vs Chael Sonnen
Matt Serra vs Frank Trigg
Justin Buchholz vs Mac Danzig
Melvin Guillard vs Ronys Torres
Tim Hague vs Chris Tuchscherer
Rob Emerson vs Phillipe Nover
Rolles Gracie vs Mostapha Al Turk