Monica Seles: From Tennis Legend to Myasthenia Gravis Advocate with $50 Million Net Worth

Tuesday, Aug 12, 2025 11:47 am ET1min read
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Monica Seles, a retired Yugoslav professional tennis player, has spoken publicly about her myasthenia gravis diagnosis for the first time. She won nine Grand Slam titles and was ranked number one in the world. Seles has a net worth of $50 million, earned through prize money and endorsement deals. She married multi-billionaire Paychex founder Tom Golisano in 2014.

Tennis legend Monica Seles has publicly shared her diagnosis with myasthenia gravis (MG), a neuromuscular autoimmune disease, in an effort to raise awareness and support for those affected by the condition. Seles, who won nine Grand Slam titles and was ranked number one in the world, made the revelation in an interview with The Associated Press ahead of the upcoming U.S. Open tennis championships [1].

Myasthenia gravis affects approximately 20 out of every 100,000 people globally, with the actual number potentially higher due to undiagnosed mild cases [1]. The disease causes muscle weakness and fatigue, which can significantly impact daily life. Seles, who was diagnosed three years ago, has experienced symptoms such as double vision and weakness in her arms and legs. She has since partnered with the global immunology company argenx to raise awareness and support for MG patients [2].

The partnership with argenx, which has a long-standing commitment to supporting the MG community, will highlight the 'Go for Greater' MG patient support initiative at the 2025 U.S. Open Tennis Championships. The initiative aims to raise awareness, connect patients with support resources, and empower them to advocate for themselves [2].

Seles' journey with MG has not been easy, but she believes that by sharing her story, she can inspire others living with the condition to pursue their goals and live fulfilling lives. The partnership with argenx builds on the company's ongoing 'Go for Greater' campaign, which focuses on helping MG patients improve their everyday lives through expanded understanding, access to tools and resources, and new treatment options [3].

References:

[1] https://www.cbsnews.com/news/monica-seles-myasthenia-gravis-diagnosis-tennis/
[2] https://www.morningstar.com/news/globe-newswire/1001122413/argenx-and-tennis-legend-monica-seles-team-up-to-raise-awareness-of-myasthenia-gravis
[3] https://www.fiercepharma.com/marketing/argenx-serves-monica-seles-collab-us-open-sponsorship-myasthenia-gravis-awareness

Monica Seles: From Tennis Legend to Myasthenia Gravis Advocate with $50 Million Net Worth

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