Manny Pacquiao's Australian strength and conditioning coach, Justin Fortune, says his fighter could so some real damage to Horn in Sunday's bout at Suncorp Stadium.

​Manny Pacquiao's Australian conditioning coach believes Jeff Horn will be consumed by nerves the moment he walks out in front of 50,000 people at Suncorp Stadium on Sunday.

The mind games are well and truly at play as the fight between Horn and Pacquiao nears.

The trainer and key adviser of the Filipino WBO welterweight champion have dismissed Jeff Horn as an easy kill who will be spectacularly knocked out early in their title fight on Sunday.

Horn's trainer, Glenn Rushton, said post-fight testing wasn't enough in major title fights and welcomed further scrutiny in the lead-up to championship bouts.

The WBO welterweight champion has gone into fight mode ahead of his bout with Jeff Horn on Sunday, giving little away in his media workout and promising he has done more than enough work to dispose of the Australian challenger.

Manny Pacquiao's trainer Freddie Roach will encourage the Filipino boxing great to hang up the gloves if he struggles against Jeff Horn in their WBO welterweight title fight, but believes his star holds all the cards.

​Jeff Horn's trainer Glenn Rushton has cooked up a confidential 10-point plan he says can guide the former schoolteacher to a famous victory over Manny Pacquiao.

Top Rank Promotions supremo says the world will be at the feet of Jeff Horn if he pushes Manny Pacquiao to the brink – or even wins – when he challenges for the WBO welterweight belt on Sunday.

Manny Pacquiao attended a church service in Brisbane on Sunday morning but is confident he won't need any help from above to knock out his first opponent in eight years.

Next week, the 29-year-old will step into the ring with one of boxing's all-time greats - and the dark days of being bullied of school will be driving him.

The Brisbane challenger to Manny Pacquiao concedes he will have to find out on the night if he's pushed too hard in the gym ahead of the WBO welterweight title fight at Suncorp Stadium.

With the mega-fight between Floyd Mayweather and Conor McGregor finally official, two possibilities quickly emerged on Thursday: Oddsmakers and analysts are either greatly underestimating McGregor's chances in the ring or the mixed martial arts champion just might be underestimating the task in front of him.

Former multi-division boxing world champion Floyd Mayweather will fight UFC lightweight champion Conor McGregor in Las Vegas on August 26.

Canberra boxer David Toussaint has signed on for the biggest fight of his life next month.

There's no more deserving winner of boxing's ultimate accolade than'the untrained, untamed skinny kid from Erko'.

Featherweight Daniel Franco remained in a coma in hospital on Sunday, a day after being knocked out by Jose Haro in the main event of a boxing card at the WinnaVegas Casino in Sloan, Iowa.

The Brisbane challenger knows he must tame his butterflies on the night as he continues his preparation to try and unseat the welterweight champion at Suncorp Stadium.

The Brisbane fighter admits he was "shocked" by Pacquiao's public stance on social issues and hopes he's the one that gets the crowd roaring at Suncorp Stadium on July 2.