TRACQUET ONE

What it is

TRACQUET ONE is a 6.2 g sensor in a sealed aluminium barrel, suspended on a progressive coil spring. It sits in the triangular throat opening below the string bed, held by a quarter-turn collar that clamps against the inside of the frame. Nothing is glued, nothing threads through the strings, and the frame does not need re-stringing.

The spring is the measuring instrument. A strike compresses it about 1.8 mm, and because the rate is known — 26 rising to 34 N/mm across the travel — that distance converts directly into force. A 9-axis core on the frame's axis samples the result at 1 kHz and writes it to onboard storage, so no phone needs to be courtside.

It reports spin in rpm, head speed in mph, contact point in millimetres from the centre of the string bed, and the peak shock that reached your grip. Six shot types are separated automatically. Everything exports as CSV, FIT or JSON at full rate, with nothing behind a subscription.

Will it fit

The tracker is 42 mm tall and hangs from the head bridge onto the yoke, so it needs a throat opening at least 95 mm tall and 22–38 mm wide where it seats. That covers essentially every adult tennis frame from 95 to 110 sq in. Padel bats and pickleball paddles are solid through the middle and have no throat at all — use GRIP.

Current-generation frames from each range. TRACQUET is a concept brand — treat this list as illustrative rather than tested.