Between 1959 and 1964 he set six official and five unofficial world records. His first was at the 1959 Santa Barbara Easter Relays, the last in 1964 in the USA vs USSR dual meet.
Between 1959 and 1964, he established six official and five unofficial world records. His first was at the 1959 Santa Barbara Easter Relays, and his last in a USA vs USSR dual meet in 1964.