US teen Keys beats No. 30 Barthel at Wimbledon

Madison Keys of the United States returns to Mona Barthel of Germany during their Women's second round singles match at the All England Lawn Tennis Championships in Wimbledon, London, Thursday, June 27, 2013. (AP Photo/Sang Tan)

LONDON (AP) — American teenager Madison Keys reached the third round in her Wimbledon debut by beating 30th-seeded Mona Barthel of Germany 6-4, 6-2 Thursday.

Keys, an 18-year-old who was born in Rock Island, Ill., saved the only break point she faced while converting 3 of 10 on Barthel's serve.

The 52nd-ranked Keys also defeated Barthel on grass in a tuneup tournament at Birmingham, England, two weeks ago.

It's the second time in the past three Grand Slam tournaments that Keys has made it to the third round. She lost at that stage at the Australian Open in January.

Bidding to reach the round of 16 for the first time at a major championship, Keys will face either 2012 Wimbledon runner-up Agnieszka Radwanska, who is seeded fourth, or Mathilde Johansson.