How Fast Is Squash Ball?

A pro squash ball hits 80 m/s — 290 km/h. The ball heats up 20°C during a rally from repeated impact, becoming bouncier as it warms; pros physically warm balls before serving by squeezing them in their hand.

Squash balls are categorised by dot colour — single-yellow for tournament play, double-yellow for elite, blue for beginners. The colour denotes how slowly the ball heats up during a rally.

• Faster than helicopter cruise
• Ball heats up 20°C during a rally