The Kiwi heavyweight has been welcomed into the camp of Floyd Mayweather Jr, who is getting ready for a big fight of his own, against Mixed Martial Arts star Conor McGregor.
Mayweather quit boxing in September 2015, with a 49-0 record, but has come out of retirement to fight McGregor, who has a 21-3 MMA record and is notorious for his trash talk.
Mayweather was not the tallest man, though renowned for his reach across the various fly, light and welterweight classes in which he has fought. He was 173cm tall compared with Joseph Parker who measured in at 193cm.