Who we are & our mental metrics

Founder of the company is Christer Rosén, an economist and statistician with a background as a tennis coach, who now combines his experience from the sport with advanced data analysis.

 

A central inspiration behind EGW comes from Christer’s work with the Swedish Ski Association and their Performance Requirement Profile — a framework that clarifies the abilities, capacities and long‑term efforts required to reach international elite level as both junior and senior.

https://www.skidor.com/idrotter/langdakning/utbildning/utvecklingsmodellen/kravprofil-langdskidakning

 

EGW aims to contribute in a similar way within tennis: creating a structured, data‑driven model for understanding the mental capabilities that truly drive long‑term development.

 

We focus entirely on performance, personal growth and learning — not on results. Stress comes from being judged on outcomes, something outside the player’s control. Performance, however, is fully controllable. By shifting attention from results to performance, we help players reduce pressure and develop a strong growth mindset.

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Over the years, Christer Rosén has written several published articles in Svenska Tennismagasinet https://www.tennismagasinet.se/ on tennis analytics. If you want to read them, just contact us and we will send the PDFs. Christer also continues to collaborate with the Swedish Ski Association on cross‑country performance analysis.

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At EGW, our performance metrics are built on this combination of coaching experience, analytical rigor and inspiration from requirement‑profile thinking. We analyzed hundreds of players and thousands of matches to identify the patterns that most strongly predict sustained performance. Before defining the metrics we use today, we tested numerous indicators through our own analytics platform, processing large volumes of match data via the Goalserve API over nearly two years.

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This work forms the foundation of EGW — a system designed to help athletes understand, train and strengthen the mental abilities that truly drive development and longevity as a tennis player.