Serving statistics: measuring aces and serve pressure | Koach
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Serving statistics: measuring aces and serve pressure

The serve is the only part of the game you control completely — and therefore the most honest to measure. Aces, errors and the ratio between them tell you per player whether their serve is a weapon, a risk or a formality.

Reading time: 4 min

The two columns that tell the story together

Aces — recorded as point type serve — are the visible yield. Service errors — in the error column — are the price. The ratio defines the server: two aces and one error per match is a weapon; two aces and six errors is roulette; zero aces and zero errors is a formality that gives the opponent a free build-up.

The hidden yield: pressure without an ace

The best serves often don't score directly — they wreck the pass, forcing the opponent into a predictable high ball to the outside. You can see that pressure in the score progression: serving runs of three or more of your own points on the same server are almost always pressure at work, even without an ace among them. Whoever only counts aces underrates their best servers. Koach now surfaces those runs itself: live with a 🔥 chip and afterwards as a top 3 of longest serving turns.

Serving statistics per player in the Koach app with aces in the serve column
The serve column per player: together with the error column you can read who dares, who gambles and who plays it safe.

What you do with it

The endgame check: look at who still dares to serve after point 20 the way they did before it. The player whose error column stays empty in the closing stages while their aces keep coming is your server for the crunch moments.

Frequently asked questions

What exactly counts as an ace?

Any serve that produces a direct point: untouched on the floor, or disrupted so badly that the pass flies off unplayable. The rule of thumb: no organized second ball possible = ace.

How many service errors per match is acceptable?

Team-wide, 10–15% of serving turns is a common range. More important is what the errors buy: errors from aggressive serves that also produce aces are investments; errors from safe serves are just losses.

Should everyone take the same serving risk?

No — differentiate per player and per score. Your ace king can take risks with a lead; at 23-24 everyone serves within the margin. Agree those rules before the match.

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