UFC 151 has been canceled after light heavyweight contender Dan Henderson was sidelined with a knee injury and champion Jon Jones declined a replacement fight with Chael Sonnen.
UFC president Dana White made the announcement Thursday, scrapping a major card for the first time in his 11 years in charge of mixed martial arts' dominant promotion.
UFC 151 was scheduled for Sept. 1 at Mandalay Bay Events Center in Las Vegas.
White is furious with Jones and his trainer, Greg Jackson, for declining a replacement bout with Sonnen, the former 185-pound contender who agreed to move up in weight with eight days' notice. White says Jones is the first UFC champion ever to turn down a match.
Jones has agreed to fight former champion Lyoto Machida on Sept. 22 in Toronto.