UFC 98 Evans vs Machida was a mixed martial arts event held by the Ultimate Fighting Championship UFC on May 23 2009 in Las Vegas Nevada Quinton Jackson former UFC Light Heavyweight champion was to fight the undefeated current champion Rashad Evans but had to undergo arthroscopic surgery to repair ligament damage in his jaw that he received in a previous training camp Instead Evans headlined the card against fellow undefeated contender Lyoto Machida