Alcaraz defeats Ruud in U.S. Open final for 1st Grand Slam title, No. 1 ranking

Walking out for his first Grand Slam final at age 19, Carlos Alcaraz bumped fists with fans leaning over a railing along the path leading to the Arthur Ashe Stadium court. Moments later, after the coin toss, Alcaraz turned to sprint to the baseline for the warmup, until being beckoned back to the net by the chair umpire for the customary pre-match photos.

Alcaraz is imbued with boundless enthusiasm and energy, not to mention skill, speed, stamina and sangfroid. And now he's a U.S. Open champion and the No. 1 player in men's tennis.

Using his uncommon combination of moxie and maturity, Alcaraz beat Casper Ruud 6-4, 2-6, 7-6 (1), 6-3 on Sunday to both earn the trophy at Flushing Meadows and become the youngest man to lead the ATP rankings.

"Everything came so fast. For me it's unbelievable. It's something I dreamed since I was a kid, since I started playing tennis," said Alcaraz, whom folks of a certain age might still consider a kid.

"Of course," he said, "I'm hungry for more."

WATCH | Alcaraz tops Ruud in U.S. Open men's final:

Alcaraz, who will move up three ranking spots from No. 4 on Monday, already has attracted plenty of attention as someone considered the Next Big Thing in a sport dominated for decades by the Big Three of Rafael Nadal, Novak Djokovic and Roger Federer.

"He's one of these few rare talents that comes up every now and then in sports. That's what it seems like," said Ruud, a 23-year-old from Norway. "Let's see how his career develops, but it's going all in the right direction."

The Spaniard was serenaded by choruses of "Ole, Ole, Ole! Carlos!" that reverberated off the arena's closed roof — and Alcaraz often motioned for the spectators to get louder. There were a couple of magical points that drew standing ovations, including one Alcaraz lost with a laser of an on-the-run forehand while ending up face-down on his belly.

He only briefly showed signs of fatigue from having to get through three consecutive five-setters in the three rounds right before the final; no one had gone through that arduous a route on the way to the title in New York in 30 years.

"It's not time to be tired," Alcaraz said.

This was not a stroll to the finish. He faced a pair of set points while down 6-5 in the third. Could have been an outcome-altering moment.

But Alcaraz erased each of those point-from-the-set opportunities for Ruud with the sorts of quick-reflex, soft-hand volleys he repeatedly displayed.

"He just played too good on those points. We've seen it many times before: He steps up when he needs to," Ruud said. "When it's close, he pulls out great shots."