John Mayhew was doctor to the All Blacks for over 200 matches, beginning in the amateur era in 1988, before moving on to work at rugby league side New Zealand Warriors in 2003. Now in his late sixties, Doc Mayhew continues to be involved in professional level rugby in his home city of Auckland. 

In our chat, the doc describes tending to legends like Michael Jones, Sean Fitzpatrick, Richie McCaw, and of course, Jonah Lomu - with whom he forged a close bond while treating the winger's genetic kidney disease.

We also discuss the perils of treating his own rugby-playing sons, his World Cup memories - not all of them fond - and the challenges of working with the toughest of players who refuse to hear that they're hurt. To no surprise this includes a story about renowned Kiwi hardman Buck Shelford, who once famously finished a game against France without realising one of his testicles had been ripped from his scrotum...