NEW YORK (AP) — After a day full of lopsided mismatches at the U.S. Open, we have yet another.

But this one’s an upset.

Monica Niculescu took out 27th-seeded Lucie Safarova in straight sets Friday at Flushing Meadows to reach the fourth round of a Grand Slam for the first time.

The 68th-ranked Niculescu won 6-0, 6-1 to become the first Romanian woman to make the round of 16 in Queens since Irina Spirlea in 1998. She had lost in the first round in her previous three appearances here.

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Safarova had to repeatedly come back from deficits to beat Madison Keys in three sets in her last match. The Czech has never been past the third round at the U.S. Open.

It’s been a stellar tournament for the Romanian women, who knocked out the French Open and Wimbledon champs in the first round. Alexandra Dulgheru defeated fifth-seeded Petra Kvitova, while Simona Halep beat sixth-seeded Li Na.

Niculescu then eliminated Dulgheru in the second round.

Are there more upsets to come? Make your predictions below…

(TM and Copyright 2011 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2011 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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