As well as a racquet, there are plenty of extra items you can chuck in to your kit bag to help your game.
Sweatbands to soak up perspiration are a good idea on a hot day. A cap or visor is also sensible, especially if the sun is low.
But don't be fooled; many professionals are given headwear by their sponsors because wearing it guarantees their logo a place in the post-match interview.
And don't forget the suncream.
What about the essentials like the number of tennis racquets?
Most professionals carry anything up to a dozen spare ones, each one strung with a different amount of tension.
They will also carry their own home-made sports drink, often made specially for them by their personal nutritionist.
A ready supply of bananas is a good idea - they make an ideal energy boost during a tough match.
The rest of us can make do with a bottle of water, tin of balls and a tracksuit.