Who was Cassius Clay’s trainer?

Today’s question: After winning Olympic gold and turning professional, Cassius Clay (Muhammad Ali was sponsored by a group of Louisville businessmen who hired his first pro trainer. What legendary boxer did they hire as his trainer?

Yesterday’s question and answer: Who was the power-hitting outfielder turned first baseman that the Chicago Cubs traded in 1988 for Mitch Williams? This player would go on to have a Hall of Fame career but be tarnished by steroids. Answer: Rafael Palmiero. This was a nine player deal. The Cubs needed a closer, and it did win a division. The Cubs were not convinced Palmiero would hit for power. In this case, they were dead wrong.