In this episode of the Functional Tennis Podcast, I’m joined by Yuhi Tanigaki, Product Manager for Tennis Footwear at ASICS, to go behind the scenes of the new Solution Speed FF4.

Yuhi plays a central role in shaping ASICS tennis shoes, working closely with designers, researchers, professional athletes, and recreational players to turn feedback into real on court performance.

We cover what actually goes into building a modern tennis shoe and how small changes can make a big difference.

In this episode, we discuss:

1. How long it really takes to develop a tennis shoe from first idea to retail
2. What stayed consistent from the original Solution Speed and what has evolved
3. The key updates in the Solution Speed FF4 and how they affect feel and movement
4. How ASICS balances speed, comfort, and durability without adding weight
5. The role of athlete feedback, including insights from Belinda Bencic
6. Differences between what professional players and recreational players value
7. Why ASICS sees the FF4 as an evolution rather than a complete redesign
8. Which type of player the Solution Speed FF4 is built for

This episode is a deep dive into tennis footwear design and a rare look at how performance products are actually created behind the scenes.

A brief catchup with whats been going on at Functional Tennis

1. Podcast break
2. New Saber Editions
3. The FT99
4. New 2027 products
5. Tariff complications
6. Podcast guests

This week on the Functional Tennis Podcast, Fabio chats with Jonas Eriksson, better known as Tennis Nerd, the go-to voice in the tennis world for rackets.

With the Functional Tennis Racket of the Year competition underway, Fabio and Jonas break down the most talked-about rackets of 2025, what to expect from the 2026 launches, and why so many pros are playing with blacked-out frames. They also dive into Wilson’s upcoming Pure Aero-style spin racket, shifts in pro player trends, and what makes the modern racket scene more competitive than ever.

If you love tennis gear talk, this one’s for you, and if you want info on all the rackets, check them out at Tennis Warehouse Europe and check out Jonas's YouTube account if you want in-depth reviews on the rackets.

This podcast is sponsored by ASICS. ASICS is a Japanese company founded in 1949 to give more people the opportunity to experience how sports and movement can have a positive impact on mental well-being.

To learn more about ASICS visit their website here: https://www.asics.com/nl/en-nl/sports/tennis/

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