Andy Ruiz

The pair will fight for the WBO world heavyweight title in Auckland next month.

Ruiz told Fight News that he's as studied the past fights of the 24-year-old Parker, and he's noticed that the New Zealand can't fight well going backwards.

Ruiz wasn't impressed with how the 6'4" Parker fought in his narrow 12 round unanimous decision win over Carlos Takam in May in their fight in the WBO heavyweight eliminator bout.

"In his fight against Carlos Takam he didn't really look that good, he's not good fighting backward," Ruiz said.

The 27-year-old Mexican has laid out his fight plan for their WBO heavyweight title fight in Auckland on December 10.

Parker will know if Ruiz has brushed his teeth before he enters the ring because he plans on being in the Kiwi's face all night.

"The main thing is just to be on him, me pressing at all times, make him feel suffocated ... that I'm always there," Ruiz said after another exhausting training session at his altitude camp in Big Bear, California.

The fight has been confirmed for Auckland's Vector Arena on December 10 and the 24-year-old Parker couldn't be happier to see that outcome from a prolonged battle to secure the finances to make it happen.

Parker made that clear when he fronted media via a video link on Wednesday.

"Now that it is locked in and we know it is in New Zealand, that very important because we have everything set up there. It's fantastic," Parker said.

The New Zealand boxer is set to face Mexican-American Andy Ruiz for the WBO title on 10 December.

Parker's promoters Duco have been trying to secure the seven-figure sum required for the fight to happen in Auckland, but had withdrawn their bid for public money to help stage the event citing reaction from the public, media and politicians.

RNZ reports Andy Ruiz has an unbeaten run over 21 fights, with 18 knockouts. The New Zealand boxer Joseph Parker will fight Mexican Andy Ruiz for the WBO world heavyweight title in Auckland in December.

The WBO title was vacated by Briton Tyson Fury earlier this month after revelations he was suffering from depression and drug addiction.

WBO gave the order for Parker and Ruiz to fight during its convention in San Juan, in Puerto Rico.

The bout is likely to be on 10 December.