Pacquiao will feed on the crowd, the biggest ever to be assembled at the massive Suncorp Stadium, and seek his first knockout win since 2009.
"I'm looking for a big win in Brisbane so we can go on to bigger and better things".
According to Dennis Principe, a boxing media expert, history has shown that being the shorter fighter didn't stop Pacquiao from pummeling his opponent.
"We're chasing a rematch with Floyd Mayweather and we know he has to score a spectacular knockout win over Jeff Horn if that's going to happen", Roach said. "The prevailing opinion is that if Pacquiao can't stop Horn, who is supposed to be tailor-made for him, then nobody will be interested in a Mayweather rematch".
Experience, "is my advantage", Pacquiao said.
Pacquiao, meanwhile, who has a stunning 59-6-2 record in his pro boxing career, will be looking to using his speed and experience.
Pacquiao and Horn easily made weight at the Saturday morning weigh-in, and the Filipino senator did a quick TV interview before making a swift exit from Suncorp Stadium to eat.
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The veteran trainer was on stage and watched as the young, unbeaten Australian held his breath while on top of the scale, before boxing announcer par excellence Michael Buffer announced that Horn tipped in at exactly 147.
"Game face is on".
"I'm nice and relaxed".
While the eyes of the boxing world are now fixated on the Floyd Mayweather vs. Conor McGregor super fight coming up in August, or the much-anticipated showdown between Canelo Alavarez and Gennady Golovkin a few weeks later, Saturday night another one of this generation's greatest fighters will be stepping into the ring. "I feel good. Weight is not a problem".
Roach said Horn was 'close to be over, ' adding, 'his weight was really, really close, it was bouncing in between'.
Horn's trainer and manager, Brisbane multi-millionaire Glenn Rushton, has it all figured out in his mind.
"He was brilliant, he was just like I want him to be".
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