In the last few years there has been plenty of innovation in the tennis market, enabling players to learn more about their game in order to improve. HEAD launched their new tennis sensor, powered by ZEPP, earlier this year. This clever device, which weighs only 7gm, is placed in the butt cap of the racket and can deliver lots of useful details to allow you to measure ball speed, spin, sweet spot frequency and even calories burned.

One of the features we particularly like is the ability to store information. In train mode, for example, you can view a database of exercises and drills provided by HEAD coaches to improve serves, forehands and backhands. And if you want to compare your stats with an opponent after a match you can link three HEAD sensors on one device.

The sensor costs £90 but, thanks to those lovely people at HEAD, we have one HEAD Tennis Sensor up for grabs.

To be in with a chance of winning simply answer the question below using the form on the right. The winner will be the first name drawn from all the correct answers received by the closing date.

What is the weight of the HEAD Tennis Sensor?

A. 7gm

B. 17gm

C. 27gm

Competition closes at midnight (UK time) on April 3rd 2018. Tennishead terms and conditions apply. No correspondence will be entered into.

This competition is no longer open for entries. The winner has been drawn from all the correct entries received by the closing date.