Las Vegas, 23 June 1986 – In the cauldron of Caesars Palace, Barry McGuigan’s WBA featherweight crown slipped away in a battle that tested not just skill, but human endurance itself. What was meant to be a straightforward third defence became one of the most punishing contests ever witnessed in the desert heat.

Originally, McGuigan was set to meet Ramon Fernando Sosa, but when the Argentine was ruled out with detached retinas, a late call went to Texas contender Steve Cruz – a relatively unknown name ranked only ninth in the division. Many saw it as a mismatch. Yet, by the end of fifteen brutal rounds, it was the underdog who would be hailed the victor, while McGuigan lay spent and hospital-bound, the belt gone but his courage immortalised.

When the opening bell rang just after six in the evening, the temperature inside the outdoor ring soared to around 110 degrees. Referee Richard Steele was drenched before the second round, and the fighters themselves battled not just each other, but the merciless Nevada sun. McGuigan started sharply, dictating the pace with his familiar aggression, his jab cutting through the haze as he built an early lead on the scorecards.

By the halfway mark, however, the energy began to drain from the Irishman. The oppressive heat gnawed at his stamina, his once crisp combinations losing their snap. Cruz, compact and patient, absorbed the punishment and returned fire, his resilience proving the equaliser in this furnace.

In the tenth, a perfectly timed counter sent McGuigan to the canvas. Though he rose bravely, the signs of dehydration were evident. The twelfth brought further trouble when Steele deducted a point from McGuigan for a low blow – a moment that would later prove crucial in the scoring. Still, the champion fought on, driven by instinct and pride more than strength.

Heading into the final round, two judges had McGuigan narrowly ahead. All he needed was to stay upright. But Cruz, sensing his chance, launched a relentless assault. The exhausted champion was dropped twice in the fifteenth, his body refusing to respond to the demands of his heart. Those knockdowns tipped the balance – Cruz taking the decision by the tightest of margins: 143–142, 143–142, 143–139.

For the crowd of over ten thousand, it was a spectacle of courage and willpower, later named The Ring Magazine’s “Fight of the Year.” McGuigan’s half-million-dollar purse paled beside the physical toll; he required hospitalisation for dehydration immediately after the bout. Cruz, earning a fraction of that amount, had produced the fight of his life.

Many who watched believed McGuigan’s management should have postponed the contest, given the change of opponent, his reported injuries, and the savage weather. But there he was – battered, proud, and utterly spent – a champion who refused to surrender until the final bell.

It wasn’t just a defeat; it was an ordeal. And though the scorecards favoured the Texan, few who witnessed it doubted the indomitable heart of the man from Clones. The record will always show Steve Cruz dethroned Barry McGuigan – but the night itself belonged to both men.