Who we are

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

We focus entirely on performance and learning — not on results. By understanding how performance is created, we aim to enable growth and foster a strong growth mindset among athletes and coaches.

Over the years, I have written several published articles on tennis analytics, and I also collaborate with the Swedish Ski Association on cross-country performance analysis.

At EGW, our performance metrics are built on this combination of coaching experience and analytical rigor. They are inspired by what the greatest players in the sport emphasize as fundamental to long-term development — especially the mental components that shape a true growth mindset.

But we didn’t stop at expert insights or intuition. We analyzed hundreds of players and thousands of matches to identify which patterns most strongly predict sustained performance. Before defining the metrics we use today, we tested numerous indicators through our own analytics platform, which processed large volumes of match data via the Goalserve API over nearly two years.

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