Agnieszka Radwanska and Simona Halep blasted French Open organisers Tuesday for forcing them to compete in pouring rain as Novak Djokovic and Serena Williams were left facing a four-day playing stretch. Radwanska, the second seed, and sixth seed Halep both lost their last-16 clashes after opening healthy leads on Sunday night. It’s a Grand Slam,” raged Polish star Radwanska after her 2-6, 6-3, 6-3 defeat to Bulgaria’s world number 102 Tsvetana Pironkova.