MADRID, May 6 (UPI) -- Laura Robson posted a second-round upset of world No. 4 Agnieszka Radwanska in Monday's play at the Mutua Madrid Open.
Robson, playing Radwanska for the first time, piled up five breaks in a 6-3, 6-1 romp. She won two-thirds of the points on serve, even though she suffered a second-set break, and 53 percent off Radwanska's serve.