Ask ten club players what a "good" win rate is and you'll get ten different answers. The honest one is: it depends on who you play, how often, and what you measure. This guide breaks down what your win percentage actually means and how to use it.

The short answer

For an adult recreational player who mostly plays opponents of similar level:

Below 40% — you're likely playing above your current level. Not a bad thing if you're improving; a problem if you're not enjoying it.
40%–55% — you're well-matched with your opponents. This is the sweet spot for improvement.
55%–65% — you're the stronger side of your usual matchups. Time to seek tougher competition if you want to keep growing.
Above 65% — you're dominating your circle. Almost certainly a signal to play up.

Why raw percentage lies

A 70% win rate over 8 matches means almost nothing. Sample size dominates. Statisticians typically want at least 30 matches before treating a win rate as a signal instead of noise.

10 matches: the confidence band is ±15 percentage points
30 matches: the confidence band is ±9 percentage points
100 matches: the confidence band is ±5 percentage points

That's why Tennis Log shows a shaded confidence band on your trend chart — wide when you have few matches, narrowing as you log more.

Rolling vs cumulative

Two different numbers, both useful:

Cumulative win rate — every match you've ever played. Slow-moving. Best for the "how am I doing overall?" question.
Rolling 10-match win rate — the metric to actually watch. It shows current form, surfaces hot and cold streaks, and reacts fast when your opponents change.

If your cumulative is 52% but your rolling 10 is 68%, you're either playing weaker opponents lately or genuinely getting better. Filter by opponent to tell the difference.

The four filters that change everything

A single win rate number is almost useless without slicing by:

1. Format

Singles and doubles are different sports. Never combine them in one number. Most amateurs win noticeably more in doubles than singles because holds are easier and coverage is shared.

2. Surface

Your win rate on clay vs hard court can swing 20 percentage points. That's not inconsistency — it's physics. If you play mostly hard courts and travel once a year to clay, don't panic when the clay number looks bad.

3. Opponent strength

The single biggest confound. A 60% win rate against opponents rated similarly to you means much more than a 60% win rate against players you consistently outclass.

4. Context

Friendly matches, ladder matches, tournament matches and league matches all live in different mental worlds. A 70% friendly win rate and a 45% tournament win rate is a mental game finding, not a skill finding.

What "good" looks like at each level

Rough guides for adult club tennis (singles, mixed opponents):

Beginner (first 1–2 years): 30%–50% is normal. You're learning, not winning.
Intermediate (3.0–3.5 NTRP): 45%–55% against similar opponents.
Strong intermediate (4.0): 50%–60% in a well-matched local pool.
Advanced club (4.5+): 55%–65%, but with much more variance because opponents are more skilled.

If you're way above these ranges, your opponent pool is too easy. Way below, too hard.

The stat that matters more than win rate

Win rate against opponents of similar level. If your app or log lets you filter head-to-head by opponent, focus there. Beating people you should beat is expected. How close the matches were, and how often you win the tight ones, is where actual improvement shows up.

Two players can both have a 55% win rate:

Player A wins 6-2 6-3 and loses 3-6 4-6 → straightforward, level-matched.
Player B wins 7-5 6-4 and loses 5-7 4-6 → every match is a coin flip. This player is one small improvement away from a 65% win rate.

How to use your win rate this month

1. Look at the last 30 matches, not lifetime. 2. Filter by format and surface — analyze each combination separately. 3. Check your rolling 10-match trend — is the curve rising, flat or falling? 4. Pair it with hold % and break % — win rate is the outcome, holds and breaks explain why. 5. Look at your record against your three most-played opponents — the head-to-heads reveal more than the overall percentage.

A "good" win rate isn't a specific number. It's a rising rolling average against opponents you didn't used to beat. That's the only version of the stat that means you're actually improving.