Tennis Betting Odds

Tennis odds are mainly presented in American odds in North America – mainly the United States and Canada, much like how fractional and decimal odds are more predominant in Europe.

American odds are represented by a positive or negative amount, like -150 or +650 to denote the probability of winning a tennis match. The higher the number, the less likely that player will win, and the lower the negative number, the more likely that player is to win.

When it comes to tennis betting odds, the positive number represents how much you would win on a $100 bet on the match underdog, and the negative number would represent how much you’d have to bet to win $100 if you chose the favored player.

When it comes to calculating the probability of winning a tennis match – there really isn’t a rule for American odds, so it’s easier to convert your odds to decimal.

• For positive odds (underdog tennis betting odds) let’s say +300: 1 + (odds / 100) = 1+(300/100) = 4.0
• For negative odds (favored player’s odds) -300: 1 – (100 / 300) = 1.333

Now that you have your decimal odds, we can help you calculate your winnings and implied probability.

Decimal Tennis Betting Odds

As we mentioned, decimal tennis betting odds are way more common in Europe – and sometimes even in the United States, some sports bettors do prefer them because they’ve been around longer.

Decimal odds are your odds multiplied by your stake, then subtract your stake.

• 9.0 odds would be calculated as (9.0 * $10) – $10 = $80 in winnings
• 1.25 would be (1.25 * $10) = $10 = $2.50

To calculate your implied probability of winning, you essentially divide 1/decimal odds which is 1/ 9.0. This will give you an implied probability of 11.11%. Implied probability is an important part of your tennis betting strategy and will help you improve your chances of winning in the long term.

Fractional Betting Odds

Fractional betting odds will take you right back to elementary school. If you were a math whiz in school, you’re well on your way to understanding fractional tennis betting odds. If you see a fractionated number, like 10/1, this means someone has a ten to one chance of winning the match. This way, you can calculate their probability of winning the match from the fractional odds.

The formula looks like this: B/(A+B) = %

For example, if you see tennis betting odds are set for a match and a player has 9/1 odds to win, there is a 10% chance they will win the match.

• 1/(9+1) = .10 (10%)

Or, if a player has 1/ 4 odds to win the match, that can be calculated like so – 4/(4+1) = 0.80 (80%) This player is usually favored to win.

So, how much will you win on fractional tennis betting odds? For every value on the right side of the fraction you wager, you will win the left. So 9/1 odds – for each $1 wagered, you will win $9. 1/4 odds – for each $4 wagered you win $1.