After beating Venus Williams, Urszula Radwanska loses at French Open; won't face older sister

Poland's Urszula Radwanska clenches her fist when scoring a point against Venus Williams of the U.S. in their first round match of the French Open tennis tournament, at Roland Garros stadium in Paris, Sunday, May 26, 2013. (AP Photo/Michel Euler) (The Associated Press)

Poland's Agnieszka Radwanska returns the ball to Mallory Burdette, of the U.S, during their second round match of the French Open tennis tournament at the Roland Garros stadium Wednesday, May 29, 2013 in Paris. (AP Photo/Michel Euler) (The Associated Press)

PARIS – Urszula Radwanska failed to follow up her victory over Venus Williams with another win at the French Open.

By losing 6-3, 6-3 to German qualifier Dinah Pfizenmaier on Wednesday, the 40th-ranked Radwanska also missed out on a chance to face her older sister, No. 4-seeded Agnieszka, in the third round at Roland Garros.

Urszula Radwanska has never made it past the second round in 13 appearances at Grand Slam tournaments.

She began the French Open by beating the 30th-seeded Williams, a seven-time major champion, 7-6 (5), 6-7 (4), 6-4 on Sunday. But on Wednesday, Radwanska lost five of the first six games against the 127th-ranked Pfizenmaier, who finished with a 33-6 edge in winners in her third career Grand Slam match.

Agnieszka beat American Mallory Burdette on Wednesday.