Editor’s Note: The Sentinel sports staff is putting together a summer series looking at the legacies of the most influential African-American athletes in history. Today: Joe Louis.Who was the greatest boxer in history?Some will say Muhammad Ali. Some will say Rocky Marciano. Some will say pound-for-pound, Sugar Ray Robinson.But Joe Louis is the only boxer to hold a heavyweight championship for more a dozen years (from 1937-49).Louis also only lost three fights, including one coming out of
