Appearing trim in an All Blacks rugby jersey, Andy Ruiz has talked up his desire to make boxing history for Mexico when he fights for the world heavyweight title.
Ruiz arrived in Auckland on Sunday morning, allowing himself six days to acclimatise for his showdown with Kiwi Joseph Parker for the vacant WBO belt.
Following a powhiri from a kapa haka group at Auckland Airport, the 27-year-old outlined why he expects to beat Parker in the clash of two unbeaten fighters.
"I'm in the best shape of my life and ready for these fireworks," Ruiz said.
"It's an opportunity of a lifetime, I've been training my ass off for this fight. God willing, I'm going to become the first Mexican heavyweight champion of the world - accomplish my dreams."
Ruiz (29-0) said he was given the All Blacks jersey - the alternate strip worn for the first time in last week's win over France - by a New Zealander in Los Angeles.
However, he said he wouldn't be out to make friends when he steps in the ring at Vector Arena on Saturday with Parker (21-0), whose style and extra height he has prepared intensely for.
A training camp in California has shed weight from Ruiz's normally stocky frame.
He estimates he weighs about 115kg, around 15kg lighter than when he sparred with Parker three years ago.
"He knows a little something about me and I know a little something about him and the fight could go either way.
"He's a good fighter, big, speed like me, we both have the same advantages, except he's a little taller."
Ruiz downplayed his relatively late arrival in New Zealand for the fight and the absence of trainer Abel Sanchez, who is in Moscow. Sanchez is expected to arrive on Wednesday.
"I did this (late arrival) three times when I went to China. I don't think this affects me in any way.
"Fighters are prepared to fight and we're just supposed to do what we've got to do."