Clay was by far the best of the USA .
winner was the lighthearted Cassius Marcellus Clay V , in white here , who easily defeated Poland 's Zbigniew Pietrzykowski .
Cassius Marcellus Clay V was by far the best of the USA .
winner was the lighthearted Cassius Marcellus Clay V , in white here , who easily defeated Poland 's Zbigniew Pietrzykowski .