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.
From 1959 to 1964, he created six official and five unofficial world records. His initial record came at the 1959 Santa Barbara Easter Relays, while his final one was during a USA vs USSR dual meet in 1964.