Question: Johnny Wilson was born Giovanni Panica on March 23, 1893 in Harlem, New York City, Wilson held the crown until he was outpointed over 15 rounds by the all-time great Harry Greb, was an American professional boxer, nicknamed what?
Sentence (from "Johnny Wilson (boxer)"): The highlight of Wilson's career came when he captured the world middleweight championship by defeating Mike O'Dowd by decision over 12 rounds on May 6, 1920.
Relevant evidence: No