TORONTO — World No. 5 Caroline Wozniacki suffered a second round upset to Swiss Belinda Bencic Wednesday at the Rogers Cup, then hit back with strong criticism of the WTA. Wozniacki played despite recovering from a nagging calf injury and fell in a close match to Bencic 7-5, 7-5 before indicating she felt pushed to play by the WTA rules. “The rules, if you're a top-10 player are that this was my commitment tournament, you're forced to play,” Wozniacki told reporters. “If you don't, you get huge money fines. You get zero points to your ranking ...which is crazy.” Wozniacki was also defeated in the second round last week in Stanford as she battled injury. Wozniacki was not alone in being upset in Toronto as third seed Petra Kvitova also went down, losing to former worlkd No. 1 Victoria Azarenka 6-2, 6-3. Defending champion Agnieszka Radwanska avoided such a fate with her 7-5, 6-3 triumph against Julia Goerges while second seed Simona Halep shook off the rust and stormed into the third round with a commanding 6-3, 6-4 win over former world number one Jelena Jankovic. Halep was joined in the third round by fifth seed Ana Ivanovic, a 6-4, 7-6(4) winner over Belarusian qualifier Olga Govortsova, but it was otherwise a tough morning for seeds at the Aviva Tennis Centre. Seventh seeded Czech Lucie Safarova was the big casualty, falling 4-6, 7-5, 7-5 to Russia's Daria Gavrilova. Following Safarova to the exit were eighth seeded Spaniard Garbine Muguruza and Russian Ekaterina Makarova, the 11th seed. Muguruza slumped to a 7-5, 6-1 loss against Ukrainian qualifier Lesia Tsurenko while Makarova, coming off a run to the semifinal in Washington last week, was tripped up by Slovenian qualifier Polona Hercog 6-2, 6-7 (2), 7-5. Italian 15th seed Sara Errani avoided adding her name to the list of surprises but only saw off American Madison Brengle in three tought sets 6-3, 2-6, 6-3. — Reuters