Question: Which professional sports does the athlete, born in 1977, who has defended the championship title as many times as the American professional mixed martial artist Stipe Miocic, play? 
Sentence (from "Stipe Miocic"): Miocic has defended the belt twice, and by doing so has tied the record for most successful title defenses held with Randy Couture, Tim Sylvia, Brock Lesnar, and Cain Velasquez.
Relevant evidence: Yes