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.
Simona Halep defeated Madison Keys in the final, 7–6(7–2), 6–3 to win the women's singles tennis title at the 2016 Canadian Open.
Elena Vesnina defeated Svetlana Kuznetsova in the final, 6–7(6–8), 7–5, 6–4 to win the women's singles tennis title at the 2017 Indian Wells Masters.
Johanna Konta defeated Caroline Wozniacki in the final, 6–4, 6–3 to win the women's singles tennis title at the 2017 Miami Open.
Elina Svitolina defeated Simona Halep in the final, 4–6, 7–5, 6–1 to win the women's singles tennis title at the 2017 Italian Open.
Dominika Cibulková was the defending champion, but lost in the second round to Heather Watson.
The 2017 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts from August 14–20, 2017. It was a Masters 1000 tournament on the 2017 ATP World Tour and a WTA Premier 5 tournament on the 2017 WTA Tour. The tournament was one of two headline events in the 2017 US Open Series. The 2017 tournament was the 116th men's edition and the 89th women's edition of the Cincinnati Masters. The tournament was held annually at the Lindner Family Tennis Center in Mason, a northern suburb of Cincinnati, in the United States.
Elina Svitolina defeated Caroline Wozniacki in the final, 6–4, 6–0 to win the women's singles tennis title at the 2017 Canadian Open. It was her third consecutive Premier 5 title, making her the first woman to win the first three Premier 5 tournaments in a season, as well as the first to win three consecutive Premier 5 tournaments since Wozniacki won Montreal and Tokyo in 2010 and Dubai in 2011. This was also Wozniacki's sixth consecutive loss in a final in 2017, making her the first to lose that many finals in a row in one season, as well as the first woman to lose six finals in a single season since Maria Sharapova in 2012.
Caroline Garcia defeated Ashleigh Barty in the final, 6–7(3–7), 7–6(7–4), 6–2 to win the singles tennis title at the 2017 Wuhan Open.
Caroline Garcia defeated Simona Halep in the final, 6–4, 7–6(7–3) to win the women's singles tennis title at the 2017 China Open. As of 2019, Garcia is the only player to win singles titles in both Wuhan and Beijing in the same year.
Karolína Plíšková was the defending champion, but lost in the semifinals to Elina Svitolina.
Defending champion Elina Svitolina defeated Simona Halep in a rematch of the previous year's final, 6–0, 6–4 to win the women's singles tennis title at the 2018 Italian Open.
Simona Halep defeated Sloane Stephens in the final, 7–6(8–6), 3–6, 6–4 to win the women's singles tennis title at the 2018 Canadian Open.
Kiki Bertens defeated Simona Halep in the final, 2–6, 7–6(8–6), 6–2 to win the women's singles tennis title at the 2018 Cincinnati Masters. En route to her first hard court & Premier 5-level title, Bertens defeated the world No. 2 & No. 1 players, in the second round and final, respectively. She became the first Dutchwoman to win the title.
Caroline Wozniacki was the two-time defending champion, but lost in the second round to Camila Giorgi.
Aryna Sabalenka defeated Anett Kontaveit in the final, 6–3, 6–3 to win the singles tennis title at the 2018 Wuhan Open.
Caroline Wozniacki defeated Anastasija Sevastova in the final, 6–3, 6–3 to win the women's singles tennis title at the 2018 China Open. It was Wozniacki's 30th and last WTA Tour title, before her first retirement in January 2020.
Ashleigh Barty defeated Karolína Plíšková in the final, 7–6(7–1), 6–3 to win the women's singles tennis title at the 2019 Miami Open. It was Barty's first WTA Premier Mandatory title. She entered the top 10 in the WTA rankings for the first time with the win.
Bianca Andreescu won the women's singles tennis title at the 2019 Canadian Open after Serena Williams retired in the final due to back spasms, with the scoreline at 3–1. Andreescu became the first Canadian to win the event since Faye Urban in 1969.
Iga Świątek defeated Karolína Plíšková in the final, 6–0, 6–0 to win the women's singles tennis title at the 2021 Italian Open. It was her first WTA 1000 singles title, and the 13 points Świątek lost in the championship match is the fewest on record in a WTA 1000-level final. This was the first WTA Tour singles final to be resolved with a 'double bagel' scoreline since Simona Halep defeated Anastasija Sevastova at the 2016 Bucharest Open, and was just the tenth such final in WTA Tour history. With the win, Świątek broke into the top 10 of the WTA rankings for the first time. Both finalists saved match points in prior rounds – Świątek saved two match points in her third round match against Barbora Krejčíková, whilst Plíšková saved three match points in her quarterfinal match against Jeļena Ostapenko.
Garbiñe Muguruza 
Simona Halep 
