FILE – Anderson Silva, right, of Brazil, fights Stephan Bonnar, of the United States, during their light heavyweight mixed martial arts bout at the Ultimate Fighting Championship (UFC) 153 in Rio de Janeiro, Oct. 14, 2012. UFC says former fighter Bonnar, who played a significant role in the UFC’s growth into the dominant promotion in mixed martial arts, has died. The UFC Hall of Famer was 45. UFC announced in a statement that Bonnar died Thursday, Dec. 22, 2022, from “presumed heart complications while at work.” (AP Photo/Felipe Dana, File)