Serena Williams defeated Victoria Azarenka in the final, 6–1, 6–3 to win the women's singles tennis title at the 2012 Madrid Open. It was Azarenka's second consecutive runner-up finish at the event.
María José Martínez Sánchez was the defending champion but decided not to participate.
Alizé Cornet won the title defeating Yanina Wickmayer in the final, 7–5, 7–6(7–1)
Li Na defeated Angelique Kerber in the final, 1–6, 6–3, 6–1 to win the women's singles tennis title at the 2012 Cincinnati Masters.
The 2013 Swedish Open was a tennis tournament played on outdoor clay courts as part of the ATP World Tour 250 Series of the 2013 ATP World Tour and as part of the International Series on the 2013 WTA Tour. It took place in Båstad, Sweden, from July 6 through July 14, 2013 for the Men's tournament and from July 13 through July 21, 2013 for the Women's tournament. It was also known as the 2013 SkiStar Swedish Open for the Men's and the 2013 Collector Swedish Open for the Women's for sponsorship reasons. It was the 66th edition for the Men's and the 5th edition for the Women's.
Sara Errani was the defending champion, but lost in the final to her long-term doubles partner Roberta Vinci, 3–6, 6–3, 3–6.
Victoria Azarenka defeated Serena Williams in the final, 2–6, 6–2, 7–6(8–6) to win the women's singles tennis title at the 2013 Cincinnati Masters. It was Azarenka's second win against Williams during the year, and Williams' fourth and last loss of the year.
Hsieh Su-wei was the defending champion, but lost in the second round to Zhang Shuai.
Defending champion Serena Williams defeated Li Na in the final, 7–5, 6–1 to win the women's singles tennis title at the 2014 Miami Open. It was Williams' record-extending seventh Miami Open title, and was Li's last tournament final before her retirement later in 2014.
Serena Williams was the defending champion, but withdrew before the tournament began.
Mona Barthel won the title, defeating Chanelle Scheepers in the final, 6–3, 7–6(7–3).
Elitsa Kostova and Florencia Molinero were the defending champions, having won the previous event in 2013, however both players chose not to participate.
Caroline Wozniacki was the defending champion, but chose not to participate this year.
Garbiñe Muguruza was the defending champion heading into the tournament but chose to compete at the Sydney tennis event instead of Hobart. In the final, it was unseeded Brit Heather Watson who defeated the American qualifier in Madison Brengle, 6–3, 6–4 to record her second WTA title.
Simona Halep defeated Jelena Janković in the final, 2–6, 7–5, 6–4 to win the women's singles tennis title at the 2015 Indian Wells Masters.
Coco Vandeweghe was the defending champion, but lost in the quarterfinals to Kiki Bertens.
Elina Svitolina was the defending champion, but chose not to participate this year.
Karolína Plíšková defeated Angelique Kerber in the final, 6–3, 6–1 to win the women's singles tennis title at the 2016 Cincinnati Masters. It was her sixth WTA Tour singles title.The two would play each other three weeks later, in the final of the US Open; Kerber would avenge her loss by beating Plíšková in three sets.
Defending champion Simona Halep defeated Kristina Mladenovic in the final, 7–5, 6–7(5–7), 6–2 to win the women's singles tennis title at the 2017 Madrid Open.
Ekaterina Alexandrova was the defending champion, but lost in the quarterfinals to Antonia Lottner.
Naomi Osaka defeated Daria Kasatkina in the final, 6–3, 6–2 to win the women's singles tennis title at the 2018 Indian Wells Masters. It was her first WTA Tour title. This was the first time two players under 21 had contested the final since Kim Clijsters and Serena Williams in 2001. At 20 years old, Osaka was the youngest Indian Wells Masters champion since Ana Ivanovic in 2008, and the youngest at any Premier Mandatory event since Caroline Wozniacki at the 2010 China Open. She was also only the third unseeded player to win the tournament after Serena Williams (1999) and Clijsters (2005), and the first Japanese player to win a Premier Mandatory title.
Kiki Bertens was the two-time defending champion, but lost in the quarterfinals to Kirsten Flipkens.
Serena Williams 
Johanna Larsson 
