When to restring? The rule you were taught is not enough
Updated: 2 hours ago
The rule is well known: restring as many times a year as you play per week. Its merit is that it exists. Its drawback is that it treats a string as though it had only one way of ageing.
There are three, and they do not run at the same speed.
Clock 1 — tension falls
It falls from the moment of installation, quickly in the first hours, then more slowly. That is not a fault: it is the normal behaviour of a material under load. The practical consequence is less well known: the bed you play a few weeks later is no longer the one you ordered. A player who “never breaks” has often been playing for months on a bed that no longer matches their setup. And the reverse is true too: a string tensioned past its useful zone never had the setting you thought you were giving it. Stringing high does not delay the clock, it starts it earlier.
Clock 2 — the structure wears
Strings rub against each other on every strike. On an edged string, the edges disappear first — which is to say exactly what it was chosen for. The string has not broken: it has lost its function. A bed whose strings stay out of line after the strike is a finished bed, whatever its tension. That is the subject of the article on structure.
Clock 3 — breakage
It is the only one of the three you can see, which is why it gets taken for the only one. It depends mostly on gauge and on how much spin you produce. Waiting for a break before restringing lets one clock decide for the other two.
The three signs that decide
Your strings no longer straighten by themselves after a rally, and you push them back by hand between points. The structure is finished.
You hit harder for the same depth. Tension has dropped below its useful zone.
The ball feels “mushy” or imprecise and you cannot say why. It is almost always one of the first two clocks, and almost never the frame.
What that changes about the rule
Keep it as a floor, not a ceiling. A player who produces a lot of spin wears the structure out long before tension becomes the problem; a flat hitter lives the exact opposite. The hours rule does not tell the two apart — you do, in three seconds of looking at your string bed.
The case of the player who never breaks
This is the player the hours rule serves worst, and there are a great many of them.
A multifilament breaks before it dies: as long as it is whole, it plays roughly as it did on day one. A monofilament does the opposite — it loses tension, its edges round off, snapback stops, and it can stay intact for months. So the player gets no signal at all, and changes nothing.
Which is why material decides as much as frequency: the two families do not die the same way. If you play a monofilament and never break, breakage is not your clock — the first two are.
What temperature does to your string bed
A string is a polymer, and a polymer responds to heat.
A racquet left in a car boot in summer, or against a radiator in winter, loses tension faster than one kept sheltered — and it does not get it back on cooling. It is not a dramatic loss over one day; it is a cumulative loss over a season, and it shows up nowhere.
A cover, then, is not a comfort accessory. It is the only free maintenance a string gets.
Restring both racquets together
If you play with a pair, restring both on the same day, with the same number and the same tension.
A matched pair where one racquet has three months more string on it than the other is no longer a pair: the two frames have the same mass and the same swingweight, and two different string beds. You will find exactly the sense of mismatch that matching was supposed to remove, without understanding why.
The useful habit, and what comes next
Write down the date it went in. Two successive strings compared from a known date will teach you more about your game than ten opinions collected courtside.
And if one of the three signs is there, the decision is already made. A fresh set, of the same number if the setup suited you — that is the simplest way to learn what you were really playing. A neighbouring number if you wanted to move something. The range is here, N°1 to N°7, and its curves are published: you will know how fast yours is meant to relax before it goes in.
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