NEW YORK, NY, USA - Caroline Wozniacki delivered the first double bagel of this year's US Open on Thursday, beating Chinese Taipei's Chang Kai-Chen in a 47-minute demolition job on Arthur Ashe Stadium, 60 60.

Wozniacki, the No.1 seed at a Grand Slam for the first time in her career, didn't even have to do too much work, hitting just seven winners in the match - but Chang was totally out of sorts, hitting a whopping 26 unforced errors.

It was Wozniacki's second career double bagel victory. She blanked Edina Gallovits of Romania in the first round of New Haven last summer.

Next up for Wozniacki is another player from Chinese Taipei, Chan Yung-Jan. Wozniacki is 2-0 against Chan, one win going to three sets.

"We played a lot in the juniors. She's a year older than me, but we know each other from back then," Wozniacki said of Chan. "She's trying to hit the ball flat and hard and trying to take advantage of the points. She tries to make her opponent run. But I feel strong and confident. I go out there and I don't give up. I don't give any free points away. That's one of my strengths."

Wozniacki has now won 10 matches in a row, five to win Montréal, three to win New Haven and another two here. She is one away from equalling the longest streak of her career, 11 (five to win New Haven last year then another six to reach the final of the Open, where she was stopped by Kim Clijsters).

"I'm feeling great. I'm feeling good. I feel fresh," Wozniacki said. "It's a new tournament and I've recovered from everything. I'm just happy to be playing and to be injury-free. Everything's perfect. I'm just taking it one match at a time."

Wozniacki is one of two players who can take the No.1 ranking from Serena Williams after the Open. If Wozniacki or former No.1 Jelena Jankovic win the title, they will assume the top ranking from Williams.