Four years ago in London, Sania, partnering Leander Paes, made it to the mixed doubles quarter-finals. However, at the Rio Games so far, Indians are yet to impress and have suffered first round defeats in men's and women's doubles events.

The top billing has been given to France's Caroline Garcia and Nicolas Mahut. Sania will be playing in her third Olympics and has the doubles experience of 37 titles, which include six Grand Slam trophies.

With medals at the Asian Games and the Commonwealth Games also in her kitty, Bopanna playing his second Olympics couldn't have asked for a better partner to launch a serious medal challenge in Rio.

Among other big medal prospects are Spain's Rafael Nadal and Garbine Muguruza, the Williams sisters from USA and second seeded French pair of Kristina Mladenovic and Pierre-Hugues Herbert. Venus Williams has decided to play alongside Indian-American Rajeev Ram.

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