The Cork man and the former world champion meet in an anticpated match up on the massive Gennady Golovkin v Canelo Alvarez undercard at the T-Mobile Arena.
Spike and his team have been in America since last week, landing initially in Boston before moving to Las Vegas yesterday where they had the red carpet rolled out for a Grand Arrivals press day at the MGM Grand.
The former Irish middleweight champion seemed at home surrounded by what looked like a hall full of Mexican support and was full of smiles for the camera ahead of his clash with the Canadian.
However, he spoke buisness when 29-year-old Lemieux’s name was brought up and predicted an Irish knockout win on Saturday.
The 33-year-old, who has aspirations of facing the winner of the main event, says he will teach the ‘boring’ ‘one trick pony’ a lesson on the HBO pay-per-view card – which will be shown live on eir Sport 1 in Ireland.
“It’s going to be the last fight of his career,” promised the Celtic Warriors man.
“He’s a former world champion but this is the end for him, he’s going to be cooked.”
“He’s very one-dimensional, he does the same thing over and over again. He’s a one-trick pony, he does the same thing in the ring, social media is the same, he says the same stuff over and over again, he’s a boring guy and he’s a boring fighter.”
“Tune in and check out the beating Lemieux is going to get. Watch out, David, you’re getting knocked out.”
The fight is the latest in a starling rise for O’Sullivan.
The ‘wrong’ side of 30 and having been pulled out against Chris Eubank Jr, a fight in Las Vegas did not look to be on even the furthest horizon for the Mahon man.
However, rebuilding under the radar somewhat on the U.S. East Coast on Murphys Boxing cards, O’Sullivan burst to prominence in the second half of last year.
Training with a renewed vigour following the birth of his first son, Thomas ‘Spike Jr’, O’Sullivan whipped himself into the best shape of his career.
This could be seen in September in his Golden Boy on ESPN headline slot in Boston where he stopped Nick Quigley with a relentless performance and even more so in December when he upset Antoine Douglas in Montreal on the Billy Joe Saunders v David Lemieux undercard.
A fire is burning within O’Sullivan, now co-promoted by Golden Boy, and he explained how this weekend’s fight “means a great deal to me, it took eleven years to get here.”
“I’m here now, I’m ready, more ready than ever before, I’m ready to do it on the biggest stage.”
“I always bring an entertaining style, I fight like a Mexican even though I’m an Irishman. I believe I’m one of the most entertaining fighters in the world right now.”
“I’ve worked hard to get here, I’ve worked hard throughout my life. I’m going to take this opportunity with both hands. I’m looking forward to shining.”