NEW YORK — Serena Williams flung her racket straight up and jumped for joy, hopping and skipping and screaming and generally looking like someone who had just won her first U.S. Open title or earned her debut at No. 1.

Nope.

It sure had been a while, though.

Displaying the talent and tenacity that allowed her to dominate tennis earlier in the decade, Williams outlasted Jelena Jankovic, 6-4, 7-5, last night in a thrill-a-minute match chock full of marvelous strokes and momentum swings to win her third U.S. Open championship and ninth Grand Slam title.

"Every one is so exciting, believe me," Williams said. "This is cool because I'm at No. 9. I'm pushing the doors closer to double digits, which of course I want to get to."

And there was this "added bonus," as Williams termed it: She returns to the top of the rankings.

"I think this title meant more to Serena than any title she's ever won," her father and coach, Richard Williams said.

As the women met at the net when it ended, Williams felt compelled to say to Jankovic, "I'm sorry I got so excited."

No apology necessary.

Four times a single point from heading to a third set, Williams was simply relentless. She took the final four games, and 13 of the last 19 points.

"I felt I had her. I had her, because she was really tired at the end of the second set," Jankovic said. "Who knows what would have happened if I had got into a third set? I probably would have had the upper hand. But who knows?"

Instead, Williams took the title without dropping a set. The closest she came to losing one? In the quarterfinals, when she beat older sister Venus in two tiebreakers.

On this night, Venus was in the guest box, cheering for Kid Sis.

It was Serena's first triumph at Flushing Meadows since 2002, and it guaranteed that the American will lead the rankings today for the first time since a 57-week run ended in August 2003 — the longest gap between stints at No. 1 for a woman.

"I feel," the 26-year-old Williams said, "like I have a new career."

Williams' previous Grand Slam title came in January 2007, at the Australian Open.

For Jankovic, it was her first Grand Slam final anywhere, and she was having the time of her life. She smiled even after losing points, and she kept a close eye on the overhead video boards, either to watch replays or to check out which celebrities were in the audience.

"They should turn it off, because I keep looking," the Serb said. "You see your big face up there and you can't help but look up."

Jankovic was ranked No. 1 for one week last month and would have returned there by winning a title match that was postponed from Saturday night because of Tropical Storm Hanna. During the postmatch ceremony, Jankovic charmed the crowd, asking how much her runner-up check was worth (for the record: $750,000). Later, she said the drama of her matches and her fun-loving style of play meant she deserved an Oscar instead of a silver dish.

MURRAY TOPS NADAL

On the men's side, Andy Murray finished a rain-interrupted victory over No. 1 Rafael Nadal, 6-2, 7-6 (5), 4-6, 6-4, to reach his first Grand Slam final.

The sixth-seeded Murray won the first two sets and was down a break at 3-2 in the third when play was suspended Saturday because of Tropical Storm Hanna.

He is trying to become the first British man to win a major tennis championship since Fred Perry at the 1936 U.S. Open.

Murray will face four-time defending U.S. Open champion Roger Federer in today's final.