JEFF Horn’s “right hand from hell” has already dropped two sparring partners and will end the undefeated reign of American rival Terence Crawford, his trainer Glenn Rushton has proclaimed.

Horn (18-0-1, 12KO) defends his WBO welterweight title against Crawford (32-0, 23KO) in Las Vegas on June 9, and it has emerged that he has been slaughtering training partners in Brisbane in recent weeks.

“Sparring is going really well, I’m doing the best I’ve ever done in a preparation,’ Horn said cryptically.

PURCHASE HORN vs CRAWFORD VIA MAIN EVENT

media_camera Jeff Horn and his sparring partner trade big shots.

“I don’t punch and tell, but I’m doing very well at the moment.”

Rushton was more forthcoming.

“You wait and see, they are going to get a bigger shock than Manny Pacquiao,” Rushton said.

“Jeff is in brilliant form, and in this form he can beat anyone in the world no doubt about that, including Terence Crawford.

“He is hitting so hard, like you wouldn’t believe at the moment. He really has the right hand from hell, and when that right hand lands on Terence Crawford I can’t see him getting up in a hurry.”

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Horn is determined to have Crawford running scared from the first punch of the fight at the MGM Grand.

“They might think they’re going to land more shots on me, but I only need one shot,” Horn said.

“Psychology wise, it’s important to land that first shot, he’s going to be fast and hard to hit but if I can land it, he’s definitely going to be on the back foot.

“I’ve got to take the fight up to him, I can’t sit back and think I’m going to counter-fight another counter-fighter - he’s very good at doing that and I’ve just got to make sure I rough him up.

media_camera Horn floors his sparring partner.

“I’m naturally bigger than him, I’ve got three to four kilos on him which doesn’t sound like a lot but in boxing terms of just pure muscle, it’s a lot.”

The camps continue to argue over whether Crawford will wear the horsehair gloves that are limited in padding and will more easily cut Horn’s face.

Rushton revealed that Philadelphia’s Ray Robinson, the last man to defeat Crawford in the amateurs, has arrived in Brisbane to begin sparring Horn from Thursday.

media_camera Horn’s camp puts Terence Crawford on notice.

“He’s beaten Terence Crawford in the amateurs, he’s been in the world rankings for years, 24 wins three losses, he’s an African-American, five [foot] 10, fast, slick, southpaw who is very close to Crawford’s style,” Rushton said.

Horn was in Sydney to get his US visa on Wednesday and was inside the consulate for three hours, missing his return flight to Brisbane.

“It was a bit of a tedious process but we’ve got it all done, now we can go to the US,” Horn said.

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