Tired Muguruza seals second semi-final spot at WTA Finals

SINGAPORE (Reuters) - Debutant Garbine Muguruza made it three straight singles wins at the WTA Finals on Friday but the Spanish world number three was anything but storming through to the semi-finals after conceding an exhaustive schedule was taking its toll.

from Reuters: Sports News http://ift.tt/1WnABe5