Tennis Betting: Sets, Games and Serve-by-Serve Prices

Tennis is a sport of two players and no draws, which makes it look simple on a betting slip. The scoring system is what makes it interesting: points build games, games build sets, and every level has its own market. Read from the scoreboard upwards, tennis betting becomes much easier to follow. The markets below are the ones a sportsbook usually lists; what you will actually find on your account, if the iLOTBet sportsbook is open to you, depends on the operator and the tournament.

The scoreboard decides the markets

A match is played to two winning sets (best of three) or, at some events, three winning sets (best of five). Each set is won by the first player to six games with a two-game lead, with a tie-break at six games all in most events. That structure explains why best-of-five matches favour the stronger player: more sets give quality more time to show, so upsets are rarer and favourites are priced shorter. Before betting, check the format of the match, because the same two players are priced differently in a best-of-three and a best-of-five.

Match level: winner and set betting

The match winner market is two-way: no draw, no refund for a close match. Set betting asks for the exact score in sets, such as 2–0 or 2–1, and pays longer odds for being more specific. A favourite at 1.30 to win the match may be closer to 1.90 to win in straight sets; if you believe the match will be one-sided, set betting expresses that view more precisely than the winner market does.

Game level: handicaps and totals

A games handicap gives the underdog a virtual lead in games, for example +4.5. If the underdog loses 6–4, 6–3, it has won seven games to the favourite's twelve; with the +4.5 start it reaches 11.5 against 12 and still loses the handicap, but a 6–4, 6–4 defeat (eight games to twelve) would win it. Total games over/under predicts how long the match lasts in games. Close matches between big servers often go over because service games are rarely broken; one-sided matches go under.

Surface, form and the schedule

Tennis is played on hard courts, clay and grass, and players' results can vary a lot between them. Clay slows the ball and lengthens rallies, grass rewards serving, hard courts sit in between. Form on the current surface is usually a better guide than overall ranking. Schedule matters too: a player coming off a long match the day before, or travelling between continents, may be priced as if fully fresh.

Retirements and walkovers

Injuries are part of tennis, and the rules for a retirement differ between bookmakers. Some settle match bets in favour of the player who advanced if at least one set was completed; others void all bets unless the match was finished. Set and game markets that were already decided usually stand. This is the most common source of tennis disputes, so read the operator's tennis rules once before you start, rather than after a player limps off.

Live tennis: following the serve

In-play tennis is driven by the serve. Prices drift slightly after every point and jump after a break of serve, then often recover if the break is returned. Live bettors watch two things: how comfortably each player holds serve, and how they perform on big points. A player who keeps reaching deuce on their own serve is in more danger than the scoreboard suggests. Markets suspend between points at important moments, and cash out may be offered at a value that includes the bookmaker's margin.

Keeping tennis bets proportionate

Tennis runs almost round the clock across time zones, which makes it easy to bet late into the night without noticing how many slips have been placed. Choose the matches you want before you start, fix an amount in shillings, and close the app when it is spent. If you top up through mobile money, look in the cashier for M-Pesa or Airtel Money and send only that session's budget.

18+ only. See the bet types guide for singles, accumulators and systems, and the sports betting guide for odds and margins.