Insight · 7 min
Tennis penalties explained: every code violation and what it costs
From a quiet code violation to a defaulted match - the full ladder of tennis penalties, how umpires apply them, and the famous matches where they decided the result.
Last updated: 10 May 2026
Key takeaways
- Penalties escalate on a 4-step ladder: warning → point → game → default.
- The clock matters: most violations stem from the 25-second serve rule.
- Verbal abuse and racket abuse are the two most common code violations on tour.
Tennis penalties look complicated from the outside but follow a single escalating ladder. Here is exactly how it works and what happens at each step.
The penalty ladder
| Offence # | Penalty | Effect |
|---|---|---|
| 1st | Code violation - warning | No score change. Recorded by umpire. |
| 2nd | Point penalty | One point awarded to opponent. |
| 3rd | Game penalty | One game awarded to opponent. |
| 4th | Default | Match awarded to opponent. |
The most common code violations
- Audible obscenity - swearing loud enough for officials or fans to hear.
- Visible obscenity - gestures intended to be seen.
- Verbal abuse - directed at the umpire, opponent, line judge, ball kid or spectator.
- Racket or equipment abuse - smashing, slamming or throwing.
- Ball abuse - hitting a ball out of court in anger.
- Unsportsmanlike conduct - the catch-all clause.
- Coaching - getting signals from a coach (rules now vary by tour).
- Time violation - taking longer than 25 seconds between points.
The 25-second serve clock
Most code violations on the modern tour are time violations. The serve clock starts the moment the previous point ends. First offence = warning; second and subsequent = loss of first serve.
Defaults that changed matches
- Novak Djokovic - US Open 2020. Defaulted for hitting a line judge with a ball after losing a game.
- John McEnroe - Australian Open 1990. First top player defaulted from a Grand Slam.
- Denis Shapovalov - Davis Cup 2017. Defaulted after hitting the umpire with a ball.
Fines vs penalties
Penalties affect the score during the match. Fines are administrative and arrive afterward, often £/$ thousands for slam events. A player can be defaulted AND fined for the same incident.
Frequently asked questions
What is the maximum fine in tennis?
Grand Slam codes of conduct allow fines up to $20,000 per offence for major violations; aggravated behaviour fines run into six figures.
Does a warning carry into the next match?
No. The penalty ladder resets for each new match within an event.
Can a player be defaulted on the first offence?
Yes - for serious or aggravated misconduct, the umpire and supervisor can skip the ladder and default immediately.