Question: What is the birthdate of this American mixed martial artist, currently fighting in the welterweight division for the World Series of Fighting and who met up with Frank Gomez at San Francisco State College?
Sentence (from "Jake Shields"): He was the last Rumble on the Rock Welterweight Champion, the only Elite XC Welterweight Champion, a former Shooto Welterweight Champion and former Strikeforce Middleweight Champion.
Relevant evidence: No