The Tashkent Open was the fifth WTA event in 2013 in which the No.1 seeds were victorious in both singles and doubles.
WTA Staff

The Tashkent Open featured the somewhat unusual occurrence of the No.1 seeds in singles and doubles winning the tournament. In fact, that was just the fifth instance of a No.1 seed sweep in the 47 WTA events played so far this year. Here is a rundown of each occurrence:

EventTop-Seeded Singles ChampsTop-Seeded Doubles Champs
ShenzhenLi NaChan/Chan
Australian OpenVictoria AzarenkaErrani/Vinci
DohaVictoria AzarenkaErrani/Vinci
BastadSerena WilliamsMedina Garrigues/Zakopalova
TashkentBojana JovanovskiBabos/Shvedova

Note: There was a No.1 seed sweep in five WTA events in 2012.