The Sports Equipment Guide

How to choose a tennis racket

What the numbers on a spec sheet actually mean.

Last updated 20 October 2026

A racket is a handful of numbers. Once you know what they do, a spec sheet makes sense. These are general rules of thumb, so treat them as a starting point, not a law.

Head size

A bigger head (around 105 sq in and up) has a larger sweet spot and gives more power for less effort, which suits newer players. A smaller head (around 95 to 98) gives more control and feel but asks more of your technique. Most all-round rackets sit around 98 to 102.

Weight

Lighter rackets (roughly 255 to 285 g strung) are easier to swing and kinder to the arm. Heavier ones (around 305 g and up) are steadier on contact and give more control, but need strength and timing. If you cannot swing it comfortably for an hour, it is too heavy for you right now.

Balance and swingweight

Balance tells you where the weight sits. Head-light rackets feel easier to move around. Head-heavy rackets add power and stability but feel slower. Swingweight combines this into how heavy the racket feels in motion, and it often matters more than the plain weight.

Stiffness (RA)

A lower RA number means a more flexible frame, which usually feels softer and is gentler on the arm. A higher number means a stiffer frame, which tends to give more power but more vibration. If your elbow or wrist gets sore, a more flexible, not-too-heavy racket is usually a safer starting point. For pain that keeps coming back, see a physio or doctor.

String pattern

An open pattern (16x19) gives more spin and power. A denser pattern (18x20) gives more control and a firmer feel. Strings and tension change how a racket plays as much as the frame does, so a racket you like with the wrong strings may feel wrong.

Try before you buy

Specs only get you so far. If you can, demo two or three rackets before you spend. Many shops and clubs lend them out. Grip size matters too: too big or too small makes your arm work harder.

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