SINGAPORE (AP) Garbine Muguruza reached the semifinals of the WTA Finals by beating former champion Petra Kvitova 6-4, 4-6, 7-5 on Friday, with the Czech player also advancing after Lucie Safarova beat Angelique Kerber in straight sets.
Muguruza finished the round-robin stage 3-0 and only needed to win a set against Kvitova to earn a semifinal berth. The other three players in the group all finished 1-2, but Kvitova advanced because of more sets won. After losing to Muguruza, Kvitova needed the already eliminated Safarova to beat Kerber without dropping a set, and her compatriot came through by winning 6-4, 6-3.
Kvitova will play Maria Sharapova, who won the other group, with Muguruza facing Agnieszka Radwanska in the other semifinal.
In a match that featured 15 breaks of serve, Muguruza converted her fourth match point with a backhand crosscourt volley to win in 2 hours, 33 minutes. The Spaniard is also into the doubles semifinals with countrywoman Carla Suarez Navarro, and said the heavy workload is taking a toll.
''For sure I'm tired today,'' Muguruza said. ''It's going to a challenge for me to see how much my body can handle, because now I don't have a day off. It's great to be in my position I think now, to be playing singles and doubles semifinals.''