Jon Rahm lived up to his star billing by powering to a two-shot victory at the Open de Espana at Centro Nacional de Golf in Madrid.
On a dramatic final day, pre-tournament favourite Rahm was locked together with fellow Spaniard Nacho Elvira coming down the stretch.
At the 17th hole, Rahm looked to have made a crucial mistake when pulling his tee-shot left but it caught the thick rough and managed to avoid the water hazard. He cashed in on his good fortune by getting up and down for par and then birdied the last.
Back on the 17th tee, Elvira also went left and this time his ball did find a watery grave. He compounded the error by missing a short bogey putt and that double left Rahm as the champion.
Paul Dunne birdied the last to sneak in front of Elvira, who had to settle for third.
Rahm, who shot a final-round 67 to win with 20-under-par, said: "It's such a satisfying feeling. When I made the decision to come straight from Augusta (where he finished fourth) it wouldn't be to just show up and walk around, I wanted to win this tournament.
"I've been blessed to be national champion from 16 to all ages in Spain. To round my amateur and pro career together in this way and win the last one I had to win and join that prestigious list of Spanish winners, it's hard to explain how good it feels and how satisfying it is," added Rahm, who became just the sixth home player to win the event.
"It's been amazing. It's truly been the hardest Sunday I've ever had in any tournament that I've won because the crowd wanted it so much and I wanted it so much. You can tell how excited everybody is, I felt that tension, I felt that stress, I felt everything magnified.
"They played a huge part, I came for them mainly so I'm just glad I can win this one for the Spanish people."
Rahm, who plays most of his golf in the United States, now has three wins from just 19 starts on the European Tour.
He's 18/1 to take victory in this summer's Open Championship at Carnoustie and 250/1 to win the Race to Dubai.
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