Question:  Stipe Miocic has tied the record for most successful title defenses held with Randy Couture, Tim Sylvia, Brock Lesnar an an american mixed martial artists who is ranked what in UFC's official heavyweight rankings?
Sentence (from "Cain Velasquez"): As of September 28 2017, he is the 3rd ranked heavyweight in the UFC's official rankings.
Relevant evidence: Yes