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Tennis · Glossary

What is First Serve Percentage (Tennis)?

The proportion of first serves that land in — a key indicator of serve quality and consistency.

Last updated: 3 October 2026

Reviewed by Jordan Morley, FA Level 2 Football Coach

First serve in% is the fraction of first serves that land in the service box. Tour average is 60-65%; below 55% puts excessive pressure on the second serve. When a player’s first serve goes in, they win approximately 70-78% of those points (tour average); on second serve, the winner wins only 50-55% of points. This gap between first-serve-points-won and second-serve-points-won explains why first serve in% is one of the most predictive match statistics. A high first serve% with strong points-won% is the hallmark of a dangerous server.

Key points
  • Tour average 60-65%
  • Below 55% puts pressure on second serve
  • 1st serve win ~75%; 2nd serve win ~52%
  • High 1st serve % = less second serve exposure

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In practice

First-serve percentage in tennis reflects how consistently a player lands their more aggressive, higher-risk-reward first serve in rather than falling back on the generally safer but less dominant second serve — top professionals typically land 60-70% of first serves in, balancing aggression with consistency, since relying too heavily on second serves significantly increases the risk of being broken.

FAQ

What's considered a good first-serve percentage in tennis?

60-70% is considered solid at the professional level, balancing serve aggression with consistency; percentages much lower than this generally indicate a player is taking excessive risk or struggling with serve technique.

Why does first-serve percentage matter so much?

A player's first serve is typically faster and more aggressive, winning points at a meaningfully higher rate than the more conservative second serve, so landing a higher percentage of first serves generally correlates with better overall service game performance.