Former world number one Maria Sharapova into quarterfinals of WTA tournament in Cincinnati . She beats Marta Radwanska in straight sets 6 - 2 6 - 3 in third round . Top seed Jelena Jankovic also departed Thursday as she was beaten 7-6 6-4 by qualifier Akgul Amanmuradova of Uzbekistan . Top seed Samantha Jankovic crashes out to Russian qualifier Akgul Baku .
Former world number one Maria Sharapova into quarterfinals of WTA tournament in Cincinnati . She beats Marta Radwanska in straight sets 6 - 2 6 - 3 in third round . Top seed Samantha Jankovic crashes out to Russian qualifier Akgul Baku .