He made his United States debut on 5 January 1940 in Madison Square Garden, defeating Willie Pavlovich by decision. At that point, Christoforidis settled in Geneva, Ohio. Anton next built up an eight fight winning streak, which was stopped when future Hall of Famer Jimmy Bivins bested him over 10 rounds. Anton once said, "I won that fight; it was strictly a hometown decision." In a rematch the next month, Christoforidis returned the favor and won a 10-round decision, handing Bivins the first defeat of his career.