Types of Bets

Most bets available on badminton are specific to one match. At Olympic games and world championships it is often possible to bet who will be the champion. At team events, like the Thomas Cup, the Uber Cup or the Sudirman Cup for national teams, it is sometimes possible to bet on the champion as well as the winners of team matches. In the past there have also been bets offered on the winner of the Danish national league. But all these types of bets are only offered at rare intervals, so the most focus will be on bets on individual matches.

All following types of bets are offered for individual matches.

Match Winner

Betting on the winner of the match is the most common type of bet. It’s also the simplest type of bet. If there are bets offered for a match, the bet on the match winner is usually included in the possible bets. The only exception is usually when one player or team is too heavily favorited.

Game Winner

Often it is also possible to bet who will win the first game. Bets who will win the second game are not as common. During the match it is usually possible to bet who will win the current and the next game, providing the opportunity to bet on the winner of the third game. If the match is already in the third game, then betting on the third game winner is the same as betting on the match winner. If the bet is placed during the second game, the difference is that the bet is voided, if there is no third game.

Game Handicap Winner

Betting if a player or pair would still win if starting with a game handicap. Usually the favorit is given a handicap of -1.5, thus the bet is effectively whether the favorite will win in straight games or not. Correspondingly the underdog is given a handicap of +1.5, the bet then becomes whether the underdog will win at least one game. Rarely the bet is also offered with reversed handicaps, that means giving the favorite a handicap of +1.5, while the underdog is given an additional disadvantage of starting with a handicap of -1.5 games. The bets then become whether the favorite will win at least one game and whether the underdog will win in straight games.

In other proposed scoring systems, also other handicaps like -2.5 are possible.

Point Handicap

Similar to game handicps, but with points. At the end of the match, the points each player scored in all games are added up. The bet is then whether the player had more points after adding the handicap to his points than the opponent scored. Unlike game handicaps, bookmakers can chose the handicap more freely. The handicap us usually chosen such that afterwards both players or pairs are evenly matched. Sometimes bets for different handicaps are offered, usually centered around the handicap that evenly splits the probabilities.

Total Number of Points in the Match

The total number of points or rallies in the complete match. The number is usually a halt-integral for the point-handicap. It is usually chosen such that both outcomes are equally probable. The more evenly matched the players or teams are, the higher the number is. Mostly only one number of rallies is offered.

Total Number of Points in a Game

Similiar to the number of points in the match, but for individual games. Mostly offered for the first game, sometimes also for the second game. Bets on the third game are usually only offered during live-betting markets.

Correct Game scored

In the current scoring system, the game scorecan only be 2-0, 2-1, 1-2 or 0-2. Betting on 2-0 is equivalent to betting on a game handicap of -1.5. The more evenly matched the players are, the closer the the odds will be to each other.

If the odds for the favorite to win with a score of 2-1 are higher than the odds for the favorite winning with a game score of 2-0, this is a strong indication of match fixing. Assuming a constant probability \(p\) for the favorite to win a game, the probability for a 2-0 game score are given by \(p^2\), while the probability for a 2-1 score is given by \(p(1-p)p + (1-p)pp = 2(1-p)p^2\). As for the favorite \(p>0.5\), this probability has to be smaller than the probability for a 2-0 game score, thus the odds have to be larger.

Rally Winner

During live-matches, it is often possible to bet on winners of individual rallies. Betting is offered not on the running rally or the following one, but on the rallies following these rallies.

Betting on rally winners is usually not profitable because probabilities are so close to 50% and any expected profit will be eaten up by the bookmaker’s overround.