Daniela Hantuchova has a stress reaction in her foot, which caused her to pull out of Stuttgart. The Slovak joined eight players who withdrew, retired or gave walkovers at the tournaments in Stuttgart and Fes this week. "It will keep me out for several weeks," Hantuchova wrote on Twitter. "The Fed Cup tie over the weekend was too much for an injury of this type, but it was worth it to bring our country back to the World Group."

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The other eight players who have suffered injury or illness are: Alize Cornet, Klara Zakopalova, Flavia Pennetta, Svetlana Kuznetsova, Patricia Mayr, Fatima Zahrae El Allami, Arina Rodionova and Ekaterina Makarova.

The Montreal Gazette reports that the number of retirements, walkovers and withdrawals in both singles and doubles in WTA Tour main draws have risen 50 percent through April 25. There have been 77 this year as opposed to 46 last year.