Question: What is the current stage name of the professional wrestler, in which Kiyoshi Tamura beat and who is the former DREAM Openweight Grand Prix Champion?
Sentence (from "Kiyoshi Tamura"): In mixed martial arts, he holds notable victories over Renzo Gracie, Jeremy Horn, Ikuhisa Minowa, Masakatsu Funaki and Kazushi Sakuraba.
Relevant evidence: Yes