The Cork middleweight dominated Nick Quigley, eventually stopping the brave Liverpudlian in the fourth round of their clash at the House of Blues.
The fight was the headline bout on a Golden Boy on ESPN broadcast shown via ESPN Deportes O’Sullivan put on a destructive display against the former Prizefighter runner-up and English title challenger.
Quigley had nothing in his punches to keep O’Sullivan off – who would drag him into a punishing close-quarters battle and get the win.
While the 29 year old Quigley was returning from 19 months out and below British title level, it was an impressive display from O’Sullivan.
Spike tore out of the blocks in a ferocious first, hurting Quigley early and setting the tone for the bout. While the Scouser recovered, his face was already bloodied and the fight did not look like one that would go the distance.
A more even second – albeit with O’Sullivan still on top – Quigley tried to move, but was being pulled into the Irishman’s fight.
It was all O’Sullivan in the third, and the Leesider hurt Quigley badly at the close of the round.
Referee Arthur Mercante Jr was concerned for the Englishman’s well-being and went to his corner ahead of the fourth. Quigley passed a prolonged questioning by the medical officials ringside but, after O’Sullivan landed another nose-busting big shots, the bout was waved off.
The impressive win sees 33 year old O’Sullivan move to 26(18)-2(1), while the brave but outgunned Quigley drops to 15(3)-3(2).