According to Norman Von Nida, he was "probably" the first amateur in roughly 15 years, since Jim Ferrier, "to lead a big tournament after two rounds."

Von Nida also stated that, "Crampton proves my prediction that he would become one of the greatest players Australia has produced.

"[2] Crampton turned professional in late 1953, becoming an assistant to Billy McWilliam at Beverley Park in Sydney.

[3] His decision to turn professional came soon after he had been left out of the Australian amateur team to tour Britain in 1954 and play in the Commonwealth Tournament at St Andrews.

[5] PGA Tour playoff record (0–2) this list may be incomplete *Note: The 1986 Pepsi Senior Challenge was shortened to 36 holes due to rain.