After splitting up at the end of the U.S. Open, two-time Grand Slam champions Peng Shuai and Su-Wei Hsieh have reunited to defend their title at the doubles competition of the WTA Finals in Singapore.

Shuai of mainland China and Hsieh of Chinese Taipei won their first WTA title together in 2009 at the Italian Open in Rome and followed it up in the same year at the China Open but has separated ways before teaming back again last year.

Like Us on Facebook

Since teaming up again, they have regained the Italian crown over defending champions Sara Errani and Roberta Vinci.

Shuai and Hsieh went on to win their first Grand Slam title at the Wimbledon Championships and followed it up with a title in Cincinnati.

At the year-ending WTA Finals in Istanbul, they went on to claim the crown as they defeated Russians Ekaterina Makarova and Elina Vesnina in straight sets.

They started 2014 with a series of wins in Pattaya, Doha and Indian Wells and moved on to be the World's No. 1 tandem before claiming their second Grand Slam title at the French Open against Errani and Vinci.

The Chinese and Chinese Taipei duo somehow lost their juice together after the All England Club as they failed to make it into the finals of any WTA tournament after and finally decided to separate their ways after their third round exit in Flushing Meadows.

Since then Shuai found a new partner in Czech Republic's Andrea Hlavackova who won their first title together in the recent China Open in Beijing.

Hsieh on the other hand has not competed in any doubles tournament since New York but has confirmed of a partnership with Indian star Sania Mirza who is also participating in her last tournament along with teammate Cara Black of Zimbabwe.

Shuai and Hsieh haven't played together since August and are out favored by the Italian duo as well as the Russian tandem.

We'll all find out as the pair will face the Spanish team of Garbine Muguruza and Carla Suarez Navarro in their first round-robin match on Wednesday.

TagsPeng Shuai, Su-Wei Hsieh