Nadal had two set points in the first-set tie break but failed to convert either, including when he wafted a forehand volley wide before a double fault handed Ćorić an early lead in the match.
The Spaniard fought back in the second set to level the contest, but Ćorić broke at 3-2 in the decider and saw out the set to claim his third win against Nadal in five meetings.
Ćorić, who was absent for more than a year after undergoing shoulder surgery in May 2021, ended the match with 39 winners and will face another Spaniard, Roberto Bautista Agut, in the third round.
“It’s difficult to take a lot of positive things, but I need to improve,” said Nadal.
“I need to practice. I need to return better. I need days (on the court), and that’s the truth. 명백하게, I had my chances in the beginning. In the tie-break, I had two important chances with two set points that I played terribly with two more-or-less easy shots.”
Nadal’s last US Open title came in 2019, 그리고 그 이후로, he has claimed three more grand slam victories to surpass Roger Federer at the top of the men’s all-time list.
This year’s tournament in New York gets underway on August 29.