Latest posts by Jonas Eriksson

Grapplesnake Aspera Triplum String Review

Written by: Jonas Eriksson |

Grapplesnake is an innovative, up-and-coming string brand. This is our Grapplesnake Aspera Triplum String review. I tested this string together with frequent Tennisnerd contributor Simon Zeitler. We always try to have multiple reviewers on each product where possible to give you a more well-rounded insight. This is how Grapplesnake describes their Aspera Triplum string. Introduction […]

HEAD Radical Racquet Review (Pro and MP, Auxetic 2.0)

Written by: Jonas Eriksson |

The new HEAD Radical 2025 racquets are out and this is our HEAD Radical racquet review. We have been testing the HEAD Radical Auxetic 2.0 Pro and MP racquets. Introduction The HEAD Radical is one of the most iconic racquet lines on the market. Ever since Andre Agassi made it famous with his swashbuckling tennis […]

Isospeed Rexxxer String Review

Written by: Jonas Eriksson |

Isospeed is a brand based out of the Isosport factory in Eisenstadt, Austria. This is our Isospeed Rexxxer string review. Isospeed has their own strings like Rexxxer, Black Fire, Grey Fire, and so on, but they also make strings for many other different brands. We were impressed by their attention to detail and passion for […]

Solinco Mach-10 String

Written by: Jonas Eriksson |

Solinco has released a new string called Mach-10. It is a softer, five-sided polyester string supposed to give you a mix of power and spin. The Solinco Mach-10 string comes in four gauges: 1.15, 1.20, 1.25, 1.30. You go thicker for more durability and control and thinner for more power and comfort. You might have […]

Diadem Axis Review

Written by: Jonas Eriksson |

This Diadem Axis review deals with the spin racquets, Diadem Axis 98 and Diadem Axis 100, from up-and-coming American brand, Diadem. The Axis is Diadem’s third racquet silo after their first control-oriented racquet called Elevate and their second, power-focused racquet called Nova. Both those lines are now on their third generation, while this is (obviously) […]

Toroline O-Toro Tour and more

Written by: Jonas Eriksson |

We have news from up-and-coming string brand Toroline, who are bringing out Toroline O-Toro Tour and several other strings. I talked to their founder, Eric Lee, about the new strings, which are in the popular O-Toro family. By the way, Toroline is finally available from Tennis Warehouse Europe. You get 10% off your order using […]

Tsitsipas new racquet

Written by: Jonas Eriksson |

I got many messages on Instagram about Stefanos Tsitsipas’s new racquet, which he is playing with in Dubai. I am not in a position to give a yes or no answer, but you can read some speculations that have circulated online below. The racquet is blacked out and has an aerodynamic beam, which is different […]

Tecnifibre Tfight 300 Review

Written by: Jonas Eriksson |

When I heard that Chris Edwards switched to this racquet, it perked my ears. Here is my Tecnifibre Tfight 300 Review. The Tecnifibre Tfight 300 should not be confused with the Tecnifibre 300S, which is 98 square inches. The trend of 98 sq inch racquet lines like the Blade or the Tfight, also introducing 100 […]

Tecnifibre Tfight 300 Preview

Written by: Jonas Eriksson |

Tecnifibre have released a 100 sq inch version of their popular Tfight. The Tecnifibre Tfight 300 should not be confused with the Tecnifibre 300S, which is 98 sq inches. The trend of traditionally 98 sq inch racquet lines like the Blade or the Tfight, also introducing 100 sq inch versions is strong. You will get […]

Is the Yonex Ezone 98 a winner?

Written by: Jonas Eriksson |

Is the Yonex Ezone 98 a winner? If you ask Madison Keys and Denis Shapovalov, the answer is yes. Here is why. Madison Keys started her year with a new racquet, the Yonex Ezone 98, and won her first grand slam title at the Australian Open. Now Denis Shapovalov won his first title in the […]