Top seed Simona Halep was pooled with Grand Slam winners Maria Sharapova and Flavia Pennetta in a formidable looking Red Group for the end-of-season WTA Finals Friday. With world No. 1 and defending champion Serena Williams opting out after narrowly missing out on a rare calendar Grand Slam, Romanian Halep is the highest seed for the eight woman end-of-season championship which begins Sunday. Halep, who lost to Williams in the final last year after beating the American in the pool stage, was drawn against Italian Pennetta, who lifted a shock US Open title after compatriot Roberta Vinci beat Williams in the last four. The Romanian, winner at Indian Wells earlier this year, will also take on Russian multiple Grand Slam winner Sharapova, who lost in the Australian Open final to Williams in January. Poland's Agnieszka Radwanska, who won her 16th career title in China last week, rounded out the group from which the top two will advance to the semifinals after round robin play. Awaiting them will be the heavy hitters of the White Group, where Wimbledon finalist Garbine Muguruza of Spain and twice champion of the grass court major Petra Kvitova were pooled together. They were joined by Germany's Angelique Kerber, who completed the rare feat of winning WTA titles on green clay, red clay, grass and hardcourts this year. Czech Lucie Safarova, who only qualified for the singles field on Thursday, was the other player in the group. Safarova, the world number nine and French Open runner-up, will also play in the doubles with American partner Bethanie Mattek-Sands where she has been drawn in the same pool as Muguruza and partner Carla Suarez Navarro. Red Group: Simona Halep (Romania), Maria Sharapova (Russia), Agnieszka Radwanska (Poland) and Flavia Pennetta (Italy). White Group: Garbine Muguruza (Spain), Petra Kvitova (Czech Republic), Angelique Kerber (Germany) and Lucie Safarova (Czech Republic). Berdych-Dimitrov quarters Top-seeded Tomas Berdych will face Grigor Dimitrov in the quarterfinals of the Stockholm Open, in a rematch of last year's final. Berdych beat unseeded German Alexander Zverev 6-3, 6-4 Thursday, while the fifth-seeded Dimitrov saw off Nicolas Almagro of Spain, 6-4, 6-4. Second-seeded Richard Gasquet advanced to the last eight after Steve Darcis was forced to retire with a left ankle injury during their second-round match. Gasquet was leading 6-1, 2-0 at the time. Darcis is expected to feature for Belgium in the Davis Cup final against Britain next month. Gasquet will face fellow Frenchman Jeremy Chardy, after he beat unseeded Federico Delbonis of Argentina 6-3, 7-6 (2). — Agencies
