UFC 143 injury news: Erik Koch was recently hurt in training, forcing him out of his upcoming fight against fellow 145-pound rising star, Dustin Poirier, at the Mandalay Bay Events Center in Las Vegas, Nevada, on Feb. 4, 2011. The promotion, which announced the bad news via its official Twitter account, revealed that the search for a replacement to step in for Koch to fight Poirier is currently underway. Stay tuned to MMAmania.com -- we'll pass along any and all relevant updates as soon as possible.