Daria Sergeyevna Kasatkina born 7 May 1997 is a Russian professional tennis player. On 19 March 2018, she reached her career-high singles ranking of world No. 11, and on 12 September 2016, she peaked at No. 43 in the doubles rankings.
Kasatkina, coached by Vladimir Platenik from Slovakia, has won one singles and one doubles title on the WTA Tour. She also won the girls’ singles tournament at the French Open in June 2014, defeating Ivana Jorović in three sets in the final.Kasatkina was part of the Russia team that won the Junior Fed Cup in 2013.
Kasatkina started playing tennis at age six. Maxim Prasolov began coaching her when she was eleven. Three years later her new coach became Damir Rishatovich Nurgaliev, a well-known tennis coach in the Samara Oblast. The fourteen-year-old won her first tournament at the fourth-graded Samara Cup. A year later she debuted at Grand Slam junior tournaments. The Russian team of Kasatkina, Veronika Kudermetova and Aleksandra Pospelova won the Junior Fed Cup in 2013, defeating Australia in the final in San Luis Potosí, Mexico.
She started her professional career in 2013. Within a year, from year-end 2014 to 2015, Kasatkina jumped 300 ranking positions.
In 2014, she won a Grand Slam junior title at the French Open by defeating Ivana Jorović in the final.
Kasatkina started 2018 season by two first-round losses, against Kaia Kanepi in Brisbane and against Barbora Strýcová in Sydney. At Australian Open she lost in second round to Magda Linette. In St. Petersburg she pleased the home crowd by defeating the world No. 1, Caroline Wozniacki, before losing in the semifinals to the defending champion Kristina Mladenovic.
By defeating Katerina Siniakova at Indian Wells, Kasatkina became Russia’s new No. 1 women’s tennis player, surpassing Svetlana Kuznetsova, who stayed 85 weeks on the top position since 16 May 2016. She then defeated reigning US Open champion Sloane Stephens in straight sets. With that win, Kasatkina defeated the fourth reigning Grand Slam champion, having defeated Jelena Ostapenko at the 2017 US Open, Caroline Wozniacki in St. Petersburg and Garbine Muguruza in Dubai. She went on scoring her second win over Australian Open champion and world No. 2 Wozniacki, in straight sets. In the quarterfinals, Kasatkina defeated yet another former Grand Slam champion, Angelique Kerber, in straight sets. In the semifinals, she defeated Venus Williams in three sets to advance her to her first Premier Mandatory final. After her victory against Venus, it was her fourth consecutive win over a former grand slam champion, following her victories against Stephens, Wozniacki and Kerber respectively. She then was defeated by the unseeded Naomi Osaka in the final in straight sets. Nonetheless, she rose to a career-high ranking of No. 11 in the world.
In Charleston, Kastkina reached quarterfinals, where she lost to Julia Görges. In Madrid, she defeated Garbiñe Muguruza, the No. 3 of WTA rankings at the time. She then lost to the eventual champion Petra Kvitová. In Rome, she beat the qualifiers Ajla Tomljanović and Danielle Collins, before losing to the eventual champion Elina Svitolina in third round.
At the French Open, Kasatkina defeated Kaia Kanepi, Kirsten Flipkens, and Maria Sakkari to meet 2nd seed Caroline Wozniacki in the fourth round. She defeated her in straight sets 7-6, 6-3 to make her first Grand Slam quarterfinal where she lost against Sloane Stephens in straight sets.
Kasatkina started grass-court season in Birmingham, where she lost in second round to Lesia Tsurenko. In Eastbourne she defeated Alison Van Uytvanck and Anastasija Sevastova before losing in quarterfinals again to Kerber. In Wimbledon, Kasatkina reached her second Gran Slam quarterfinal. She lost to Angelique Kerber, who went on to win the tournament.
Kasatkina played as second seed at 2018 Moscow River Cup, she lost in second round to Tamara Zidanšek. At Rogers Cup Kasatkina defeated Maria Sakkari before losing to Maria Sharapova in the second round.