Mirra Andreeva and Marta Kostyuk have been two of the most consistent performers on clay this season. They are now bidding for a place in Saturday’s French Open final as they chase their maiden Grand Slam title.
Both players are mentored by female coaches, who have been integral to their success. Andreeva is coached by former Wimbledon champion Conchita Martínez, while Sandra Zaniewska has taken charge of Kostyuk.
Mirra Andreeva’s Partnership With Conchita Martínez
Andreeva hired Martínez as her coach at the start of the 2024 clay season after splitting from Jean-René Lisnard during the pre-season and ending her temporary stint with Kirill Krioukov. Martínez famously coached former World No. 1 and two-time Grand Slam champion Garbiñe Muguruza before her stint with the teenager.
The Spanish coach enjoyed a successful tennis career herself. She reached World No. 2 in singles and lifted 33 titles, including the 1994 Wimbledon Championships. Her expertise soon paid dividends as Andreeva won her maiden tour title on clay at the 2024 Iași Open. She was also the runner-up at the WTA 500 Ningbo Open the same year.
Andreeva’s 2025 season with Martínez brought more success. Aged 17, she won her first two WTA 1000 titles in Dubai and Indian Wells, establishing herself as a force to be reckoned with on the tour. She began her 2026 season with victory in Adelaide and clinched her second trophy of the year in Linz at the start of the clay season. The Russian star also reached her first WTA 1000 final on clay in Madrid. Here, she was beaten by Marta Kostyuk.
Marta Kostyuk’s Collaboration With Sandra Zaniewska
Kostyuk, who was trained by her mother, Talina Beiko, for the most part of her young career, hired Zaniewska after the 2023 Wimbledon Championships. The 34-year-old Polish coach won 10 singles titles and 7 doubles titles on the ITF Tour and reached a career-high singles ranking of World No. 142. After playing her final match in 2017, she was associated with Alizé Cornet and Petra Martić.
Zaniewska helped Kostyuk win her two clay-court titles at the 2026 Open de Rouen and the Madrid Open. The Ukrainian also reached three other finals during their collaboration – the San Diego Open and the Porsche Tennis Grand Prix in 2024, and the Brisbane International in 2026.
Kostyuk also previously highlighted the importance of having a female coach. “I’m a person who talks, and it was very difficult for me because when you work with a male coach, most of them don’t talk. They cannot express what you feel and adjust. I’ve been coached by my mom for most of my life, by a woman. I’m very happy, and I really hope that examples of mine and Sandra’s will bring more coaches on tour and the girls will trust more women,” she told WTA Insider.
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Both Andreeva and Kostyuk have set an example for the WTA Tour with their success under the mentorship of female coaches.
