A tiebreak decides a set when the games reach 6–6. Instead of playing on until someone leads by two games, players play one deciding game scored in points. This guide covers the standard 7-point tiebreak, the 10-point match tiebreak, serving order (singles and doubles), changing ends, how to call the score, the common formats, and the mistakes people make most.
When is a tiebreak played?
In most formats, when a set reaches 6 games all (6–6), you play a tiebreak to decide the set, which is then recorded as 7–6. A few formats vary the deciding set (more on that below), but the standard set tiebreak is first to 7.
How to score a standard tiebreak (first to 7)
- Won by the first player to reach 7 points with a margin of two. So 7–5 wins, but 7–6 does not — you keep going until someone leads by two (8–6, 9–7, and so on). There is no cap.
- Serving order: the player whose turn it is to serve serves the first point only. After that, service alternates every two points, and each new pair of points starts with the other player.
- Sides: players change ends every six points (after point 6, 12, 18…).
- The winner takes the set 7–6. The losing tiebreak score is often shown in brackets, e.g. 7–6(4) means the tiebreak finished 7–4.
Worked example — points 1 to 12
Say A is due to serve. Here is exactly who serves and when, and when you swap ends:
| Points played | Server | Side served from | Change ends? |
|---|---|---|---|
| 1 | A | Deuce (right) | — |
| 2–3 | B | Ad, then deuce | — |
| 4–5 | A | Ad, then deuce | after point 6 → swap |
| 6–7 | B | Ad, then deuce | — |
| 8–9 | A | Ad, then deuce | — |
| 10–11 | B | Ad, then deuce | after point 12 → swap |
The pattern is simple: one, then two, then two, then two… Each server after the first always begins from the ad (left) side.
How to call the score in a tiebreak
Points are counted as plain numbers — 1, 2, 3…, not 15/30/40. The server calls their own score first: if the server has won three and the returner two, it's "3–2". A "mini-break" is when you win a point on your opponent's serve — that's what actually decides most tiebreaks.
The 10-point match tiebreak (super tiebreak)
Many junior, college, doubles and recreational formats replace the deciding third set with a 10-point match tiebreak: first to 10 points, win by two. Serving and side-changes work the same way (serve one, then alternate two; change ends every 6 points). It's recorded like a set score, e.g. [10–7].
Which tiebreak does my format use?
| Format | At 6–6 in a normal set | Deciding set |
|---|---|---|
| Standard best-of-3 | 7-point tiebreak | 7-point tiebreak at 6–6 |
| Match-tiebreak format (common doubles / juniors) | 7-point tiebreak | 10-point match tiebreak instead of a 3rd set |
| Pro Grand Slam final set (current unified rule) | 7-point tiebreak | 10-point tiebreak at 6–6 |
| Fast4 | tiebreak at 3–3, first to 5 | same |
Not sure which one you're playing? Pick the format when you start the match in CourtLive and it applies the right tiebreak automatically — you never have to remember the rule mid-match.
Serving order in a doubles tiebreak
It works exactly like singles, but with four players in their established serving order. Whoever is next to serve serves point 1; then service passes around the four players two points at a time. Each player also returns from the side they've been returning on all set. Change ends every six points.
No-ad and other variations
Tiebreak rules don't change with no-ad game scoring — no-ad only affects deuce inside a normal game. Whatever your format, the tiebreak itself is scored the same: first to 7 (or 10 for a match tiebreak), win by two.
Common tiebreak mistakes
- Forgetting the single first serve. The opening server serves only one point, not two — miss this and the whole rotation is off.
- Stopping at 7–6. You must win by two; 7–6 keeps going.
- Missing the end change at 6 points. Swap after every sixth point, even mid-tiebreak.
- Calling the returner's score first. The server's score is always said first.
Let CourtLive score it for you
Getting the serving order and win-by-two right under pressure is exactly where people lose track. The CourtLive tennis scoring app handles tiebreaks, match tiebreaks, deuce/advantage and no-ad automatically — you just tap the point winner, and it keeps the score correct. You can even share the live score so anyone follows along in a browser. It's free.