Aryna Sabalenka’s Coach Sheds Light on Menstrual Cycle’s Effect on Athletes, Reveals How World No.1 Struggles During Matches
Aryna Sabalenka played nine finals, winning four titles, including the US Open in the 2025 season.
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Aryna Sabalenka (Image via X/f)
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One aspect of sports when it comes to female athletes is not talked about often. It’s the players’ menstrual cycles, which, most of the time, bring a great deal of challenges while competing.
Even World No.1 Aryna Sabalenka is not immune to menstrual problems, which almost every girl and woman deals with all over the world. Sabalenka’s performance and fitness coach, Jason Stacy, is well aware of this, and during his interview with The Line, he revealed that sometimes Sabalenka finds it difficult to play due to her cycle.
In recent years, as far as I can remember, I could see that there was a thing there, and you couldn’t find any information on how to train, how to do this, or the differences. But you know, I’m working with so many girls, like with some of the younger girls, and how it was all influencing how they felt, their mood, reactions, even their body.
Jason Stacy said
Stacy is not a fan of birth control pills or other methods that stop the cycle or delay it because he wants her to be healthy as a woman so that she can start a family, which is one of Sabalenka’s goals outside of tennis.
Aryna has a thing, a certain day, like you can see matches where you’re like, ‘What is going on with her?’ And it’s nothing to do but with her cycle, the timing, where she just has no sense of her body. We’re working on different things to help that, which we’re always going to be working on.
Jason Stacy added
Stacy has been a part of Sabalenka’s team since 2018. Under him, Sabalenka clinched four Grand Slam singles titles, including the US Open this year.
Jason Stacy reveals what genuinely terrified Aryna Sabalenka
Aryna Sabalenka was afraid that the COVID-19 pandemic would end up affecting her game so much that she would find it difficult to get back. Jason Stacy, during that same interview on The Line, revealed Sabalenka used to have a lack of trust in herself, which she gradually overcame by being more open about her fears and goals.
After COVID, when we first went back to the US Open, there was this moment where she genuinely was terrified that she was going to not know how to play tennis ever again, like she was done. Imagine that. You’re like, ‘What? You’re telling us this now?’
Jason Stacy said
This year, Sabalenka finished the season with four titles she lifted from nine finals. Apart from the US Open, she took home two Big Titles at the Miami Open and the Madrid Open by defeating Jessica Pegula and Coco Gauff, respectively.
Sabalenka also played the finals of the Australian Open and the French Open but failed to win, losing to Madison Keys in the former and to Gauff in the latter event. The 27-year-old also reached the championship clash of the WTA Finals for the second time but failed to go past Elena Rybakina.
Sabalenka finished the season as the No.1 player for the second consecutive time. She had a 63-12 win-loss record.
Sabalenka will be playing one more match this season. It will be an unofficial match in the Battle of the Sexes exhibition event, which will be organized by Naomi Osaka‘s agency, Evolve, on December 28 in Dubai.
Sabalenka will lock horns with Nick Kyrgios, who has been dealing with fitness issues and finished his season after his doubles match with Gael Monfils at the Citi Open. Following the Battle of the Sexes, Sabalenka will start focusing on her goal of winning a third Australian Open title.
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