Serve holds and breaks set the price
Tennis is built on serve. In most matches the server wins more than half of the points on serve, and therefore holds the large majority of service games. That one fact explains almost every live tennis price.
- A hold of serve is expected, so it moves the match price only a little.
- A break of serve is the big event. It hands one player a lead in the set that the other has to win back on the opponent serve.
- Break points are the tense moments before a possible break, and prices react to each one.
- Tie-breaks compress a set into a few points and make the price jump on every mini-break.
Scoreboard position matters more than the raw score. A 5 to 4 lead while serving for the set is a much stronger spot than 5 to 4 with the opponent to serve. A good live price always knows who serves next.
The serve-hold Markov model
Tennis has a nested scoring system: points make games, games make sets, sets make the match. That structure fits a Markov model, where every score is a state and the chance of moving to the next state depends only on who is serving.
The engine starts from each player chance of winning a point on serve. From that one number per player it computes the chance of holding a game from any score, then of winning the set from any game score, then of winning the match. Every market comes from the same chain: match winner, set winner, total games, game handicap and the next point.
Live, the point-on-serve estimates update as the match unfolds. A player whose first serve stops landing sees the hold probability drop, and the set price follows. The engine recomputes the whole chain every second and again after every point, which keeps short markets such as the next point consistent with the match price.
Tennis micro-markets
Tennis produces more settled micro-markets per hour than almost any other sport, because a point takes seconds. Typical ones are:
- Winner of the next point.
- Ace on the next point.
- Double fault in this game.
- Will this game go to deuce.
- Hold or break of the current service game.
- Score of the current game: hold to love, to 15, to 30 or after deuce.
A next point market opens after each point and settles on the next one. A game market opens at the start of a service game and settles when it ends. Ace and double fault markets change with the player serving: a big server on a fast hard court carries a short ace price, a weaker server a long one.
These point and game windows come from our tennis micro-markets generator, which licensed operators can switch on for their own tennis coverage.
| Moment | Effect on prices | Market status |
|---|---|---|
| Point won on serve | Small move toward the server holding | Open between points |
| Break point | Hold price lengthens, set price tightens | Suspended for the point |
| Break of serve | Set and match prices jump toward the breaker | Suspended for a few seconds, then reopened |
| Tie-break mini-break | Set price swings sharply | Suspended for a few seconds, then reopened |
| First serve percentage drops | Hold probability falls over the following games | Open |
Pauses on key points
Tennis has a natural rhythm: the ball is in play for a few seconds, then there is a pause before the next serve. Markets trade in the pause and close for the point itself.
The engine suspends micro-markets for a few seconds after dangerous moments, then reprices and reopens. In tennis that means break points, set points and match points, and any point that changes who leads the set. A break of serve reprices every market in the chain at once.
Challenges and line calls can reverse a point. When the feed amends the point, the score is corrected, prices follow and markets that settled on the original call are resettled from the corrected record.
Retirements need their own rules. A match that ends with an injury retirement settles each market according to its stated rule, and markets that were never decided are voided.
In the game your call keeps the multiplier you saw at the moment you made it, whatever the next point brings.
Call tennis matches for points
Tennis is the best sport in RealTimeBets Play for rapid calls. Every point is a new tile, and a single service game can give you six or eight calls in a few minutes. Back the server, call an ace, or bet your points on a break before it happens.
Calls on tennis cost points only. There is no money to wager, points carry no cash value and are never sold, transferred or swapped, and nothing is paid out as a prize. Players must be 18 or older.
The list on this page shows tennis matches in the engine now. Today they are replays of fictional players marked "Replay"; real matches from the licensed data feed appear with a "Live" label. Every rule of the game, from multipliers to settlement, is the same on both.
Read how Premium, leagues and the one-match demo work on the sports prediction app page.
Tennis odds for licensed operators
Tennis runs across most of the year and across time zones, which makes it a valuable round-the-clock in-play sport for sportsbooks. The tennis odds API streams match, set, game handicap and total games prices over REST and streaming push, with point-by-point incidents and the server in the event data feed.
Point markets are where tennis in-play volume concentrates, and they are hard to run by hand because there are so many. The Growth plan generates them automatically with the micro-market module, suspends them on break points through the risk engine and results them through settlement webhooks signed with HMAC SHA-256.
The serve-hold Markov model behind these prices is our own, and margin can be set per market. Sign up for a sandbox key to test the payloads, then store your licence record and pick a paid plan to move to production.