Indo-Swiss collaboration was the flavour of the season; it worked like a dream for two of our biggest tennis icons - the path-breaking Sania Mirza and the evergreen Leander Paes. With Martina Hingis as the common link, they lifted five Grand Slam doubles trophies in 2015. Sania's run to the summit of women's doubles gathered steam when she teamed up with Martina in March following a failed partnership with Taipei girl Hsieh Su-wei. The duo swept through the first three tournaments they entered, catapulting Sania to No. 1. Five quiet weeks followed, before Sania and Martina got back their mojo.