Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. UFC 107: Penn vs. Sanchez was a mixed martial arts event held by the Ultimate Fighting Championship (UFC) on December 12, 2009 in Memphis, Tennessee at the FedExForum. On October 21, it was announced that a previous matchup between welterweight contenders Thiago Alves and Paulo Thiago had been changed to Alves vs. Jon Fitch because Fitch''s opponent for UFC 106, Ricardo Almeida, suffered an injury. Paulo Thiago fought on UFC 106 on November 21 against UFC newcomer Jacob Volkmann and won the fight by Unanimous decision. It was then announced on October 30 that Fitch would again be without an opponent as Alves was forced to withdraw because of a posterior cruciate ligament tear. It was later announced that Jon Fitch will face Mike Pierce at UFC 107.