Sania Mirza Tennis Career:

2015: Number 1 WTA Doubles Ranking, Wimbledon Doubles Champion and Open Doubles Champion;

Mirza begen her 2015 season ranked No. 6 in the doubles ranking. She  started a new partnership with then world No. 5 Hsieh Su-Wei from Chinese Taipei after Cara black decided to go for a limited 2015 season. The pair started their season. at the 2015 Brisbane international as the top seeds and reached the semi-finals losing out to 4th seeds Caroline Garcia and Katarina Srebotnik in the Super tie-breaker after having won the first set against the opponents but eventually going down 6-4, 6-7(1), [8-10].

Mirza paired up with former partner and good friend American Bethanie Mattek-sands for the Apia international and went on to win they tournament for her 23rd career title (5th with mattek-Sands) beating the highly fancied 2nd seeds Martina Hingis and Flavia pennetta in the Quarters and top seeds Roquel Kops jones and Anbigail Spears 6-3, 6-3 in the finals, but lost in the second round at Melbourne she also re-entered the Top 5 in the ranking. Sania also reached the finals of Qatar Ladies
Open 2015 at Doha alongside Hsieh. The pair lost to Americans Raquel Kops-jones and abigail Spers 4-6, 4-6. 

Mirza then ended her partnership with Hsieh Su-Wei and paired up with Swiss legend Martina Hingis. The pair entered India wells as the top seeds and went on to win the titles in their debut they beat opponents including former world number ones Lisa Raymond and Samantha Stosur 6-0, 6-4. Hingis and Mirza didn't lose more than four games in any set After cruising through the forts set of the final, they fell behind4-2 second set but won the next 4 games to beat second seeds Ekaterina Makarova and miami marters event, against beating the same opponents. Mirza jumped two places on the Ranking table to be ranked at her career best No. 3 in the Doubles Rankings. 

The duo then entered the 2015 miami Open and went to beat the same opponents in the finals marking it their second title in as many tournaments. the pair did not lose a single set the toyrnament either marking the sets score 20-0 for their newly formed partnership. Before reaching  the finals at miami the pair beat Elena Bogdan and Nicole Melichar 6-1 6-0, Gabriela Dabrowski and Alicja rosolska 7-6 (6), 6-4, Times Babos and Kristina Mladenovic 6-3, 6-4. The finally overcame vesnina and makarova in the finals 7-5, 6-1. 

Mirza and Hingis won 2015 Family Circle Cup's double title in April 2015 defeating Casey Dellacqua and Darija jurak 6-0, 6-4 and with the title win mirza became the first Indian to be ranked World No. 1 in WTA's doubles ranking. it was Sania and Hingis third Successive title win and they have not lost as a single match since joining forces "It's a dream for every kid to be No.1 one day."Sania said after her win And on reaching No.1 in Charleston? she added "No. tournament has been as special to me as the Family Circle Cup and no tournament will ever be as special to me, because i become No.1 hare, they were routed in the first round at the porsche Tennis Grand prix They reached the finals of Italian Open but lost to the  team of Times Babos And Kristin Mladenovic They lost in the Quarter finals of 2015 Frech Open To Bethanie mattek-sands and Lucie Safarova by 7-5, 6-2 where the duo were the top seeds. Mirza was also given the top seeding with her partner Bruno Soares in the mixed Doubles event. In Spite of this, the pair lost 2-6, 2-6 in just 56 minutes against the unseeded Anna Lena Groenefeld and jean- jullien Rojer in the first round 

For the grass court season Mirza was seeded number 1 in the Birmingham premiere level event and partnered with Sasey Dellacqua However, the team crashed out of the WTA Aegon Classic following a straight set defeat in Birmingham on 18 June 2015. they lost 4-6, 2-6 to unseeded pair of Zheng jie and Yung-jan Chan in the opening round. Sania Mirza and her doubles partner Martina Hingis were beaten in the semi-finals at the WTA Aegon international doubles in Eastbourne the top seed lost to the fourth seeded French-Slovak combine of Caroline Garcia and Katarina Srebotnik 5-7 in 81 minutes.

Mirza and hingis won the 2015 Windblown Championships defeating Ekaterina Makarova and Elena Vesnina 5-7, 7-6(7-4), 7-5 in the final after splitting two very close sets against two- time Grand Slam champion Makarova and vesnina, Hingis and Mirza who were playing just their second Grand Slam together-fell behind 5-2 in the their set were a game away from going out. but a fierce rally saw them drew level at 5-all, and after a half hour break for Centre court roof to be closed due to fading light, the No 1seeded Swiss- India duo came out stonger, breaking the No. 2 seeded Russians one last time and win gave Mirza her first Grand Slam title in Women's Doubles and Hingis her tentth.

En route to the final the pair not lose a single set against any of their opponents. in the opening two roundd the duo beat unseeded opponents, Zarina Diyas and Saisai Zheng 6-2, 6-2 and vestran Japanese-Italian combine of kimiko Date-Krumm and Francesca
Schinavone 6-0, 6-1 16th seeded Spaniard dua of Anabel Medina Garrigues and Arantxa parra Santonja beating them 6-4, 6-3 in the their round, 9th seeds Casey Delloacqua and Yaroslava Shvedova 7-5, 6-2 in the semi finals before finally overcoming Vesnina and Makorova in the marathon finals with the win Mirza and Hingis also regain the top spot in 2015 Road to  Singapore Standing trading Spots with Bethanie Mattek-Sands and Lucie Safarova and became the first team to qualify for WTA finals.