Phoenix Of Spain upstaged his old rivals Too Darn Hot and Magna Grecia to take the Tattersalls Irish 2,000 Guineas in emphatic fashion at the Curragh.
The Charlie Hills-trained colt had finished second to each of the market principals on his last two starts of 2018, and went to the Classic without a previous run this season, having missed the Qipco 2000 Guineas at Newmarket after scoping dirty.
However, he showed he was ready to run for his life in a race that had been hyped as a clash between the big two.
Jamie Spencer had Phoenix Of Spain (16-1) smartly away and soon in a good position. Skardu and Emaraaty Ana were also to the fore, with Newmarket victor Magna Grecia and Mohawk close up.
Too Darn Hot and Frankie Dettori loomed ominously large in the centre of the course just under three furlongs out, with Magna Grecia weakening out of contention not long afterwards.
Too Darn Hot put in a strong challenge, but Phoenix Of Spain was up to the task and kept on strongly to win by three lengths.
Half a length away was Decrypt, who snatched third place from Skardu.
It was revealed after the race that the Irish National Stud have acquired Phoenix of Spain.
Earlier Mr Lupton came from last to first to claim the Grade Two Weatherbys Ireland Greenlands Stakes at the Curragh.
The Richard Fahey-trained six-year-old loves to arrive off a strong pace and the six-furlong contest was run to suit, as Ardhoomey and Speak In Colours ensured there was no hanging about.
There were many in with chances in the final quarter-mile - but Spencer held the aces as he delivered Mr Lupton (5-1) to swoop in the final furlong and beat Speak In Colours, the 4-1 favourite, by three-quarters of a length.
Tom Hogan's 11-year-old stalwart Gordon Lord Byron outran his odds of 20-1 to take third place, a length and three-quarters away.
Spencer said: "He likes to go to sleep early and then pick up from halfway.
"I actually got there soon enough on him as doesn't do much when he gets there, but he toughed it out.
"It was his first start of the year and he was very fresh. As the year goes on he gets better and more relaxed. Hopefully he's got a good season ahead of him."