PARIS - Andrea Petkovic advanced to her first Grand Slam semifinal, beating Sara Errani of Italy 6-2, 6-2 at the French Open on Wednesday.
Petkovic had some trouble holding serve, but her groundstrokes consistently landed near the lines, many of them for winners.
The 28th-seeded German had been 0-3 in major quarterfinals, losing at that stage at the Australian Open, French Open and U.S. Open in 2011. Her ranking dropped after that, as low as 177th last year, because of a right knee injury.
Errani was the runner-up at Roland Garros in 2012, losing to Maria Sharapova. Last year, the 10th-seeded Italian reached the semifinals and lost to eventual champion Serena Williams.