Kell Brook and Gennady Golovkin this afternoon declared themselves ready for boxing's biggest fight of the year.
The pair faced the cameras at a press conference in London ahead of their battle at the O2 Arena on September 10.
There was obvious respect from both men towards each other - the Sheffielder and the Kazhak said they wanted to put on a pulsating show for the world's boxing fans.
Brook, who is moving up from welter to middleweight, said his training programme in the Canary Islands was on track for him to deliver a performance that would shock the world.
"I am very healthy at that weight , I am well hydrated, eating well and training like a wild horse" said the South Yorkshireman.
Golovkin said he was excited at the scale of the event - his first every fight in England.
“I’m very excited, I’m very happy to be here,” he said.
“I can give true fans, UK fans, an amazing event. This is the biggest fight for us, I respect Kell, he has a very good team.
“I understand this isn’t easy, this is very serious business for us. I’m ready 110 per cent, I believe I bring amazing show, a big event, big drama show.
“This is the biggest test for me. Kell is a true champion, right now he’s coming to middleweight. This is the biggest test for me.
“I’m not scared, I understand this is business. I respect sport, I respect boxing. This is a chance to bring a present to the UK.”
The middleweight's promoter Tom Loeffler said: "These are two undefeated champions, give Kell Brook credit, he has a lot more hear than middleweights who wouldn't take the fight.
"He has heart, courage and a will to show he is one of the best boxers in the world."
Loeffler predicted the clash - broadcast live in America and Germany, would be THE fight of the year.
It would be a contest between GGG's punching power and Brook's speed and movement, he said.
"Kell can use this move up (in weight divisions) to his advantage" he said.
"Gennady has become a darling in the USA with 22 KOs in a row. But we have had problems getting people in with him. it's been the same for Brook, so this fight solves some problems."
The rivals have knocked out 57 opponents between them.
And host promoter Eddie Hearn said the hairs on his arms had stood on end when he's been involved in making the fight happen.
He compared Brook, who lives in Ecclesall, with the likes of Marvin Hagler and Sugar Ray Leonard, for stepping up against a naturally bigger man.
"We are very, very, very confident of success" said Hearn.
"We are here to win and shock the world."
Brook's trainer Dom Ingle said his man was in the shape of his life - but added he needed to be to beat the pound for pound megastar.
GGG's trainer Abel Sanchez added that both boxers would show intelligence in the ring, as well as brawn and courage,