Explain Betting Odds Ratio

Welcome to the Sports Betting Odds section of The Sports Geek. If you are new to sports betting and don’t understand how to read betting odds (+150, -110, +2200, etc) we will lay it all out for you and help you learn how the betting odds work.

1. How To Read Betting Odds Ratio
2. Explain Betting Odds Ratio Calculation

Betting odds represent the probability of an event to happen and therefore enable you to work out how much money you will win if your bet wins. As an example, with odds of 4/1, for every £1 you bet, you will win £4. There is a 20% chance of this happening, calculated by 1 / (4 + 1) = 0.20. Sports Betting Odds Explained. Many people don’t know how to read or calculate sports betting odds, so below we have done our best on explaining how betting odds work. The most common type of sports betting odds used in North America are the American style odds which we explain below. When horse racing odds are shown in the form of 7-2, 5-1, etc, it expresses the amount of profit to the amount invested. So odds of 7-2 mean that for every $2 invested, the punter gets $7 profit in return. This means when you bet $2, the total return if the bet is successful is $9. There are three different ways to express odds when it comes to sports betting - American odds, fractional odds and decimal odds. Decimal odds are frequently used at European facing sportsbooks, while American odds are mainly used at offshore books that target Americans, as well as US-based brick-and-mortar casinos.

Sports Betting Odds Explained

Many people don’t know how to read or calculate sports betting odds, so below we have done our best on explaining how betting odds work. The most common type of sports betting odds used in North America are the American style odds which we explain below.

American Style Sports Betting Odds

Most online sportsbooks will list their odds in what is called “American Odds”. There are a couple different versions of sports betting odds, but these American Odds are the most common odds used. Reading and understanding sports betting odds can bet a little confusing to beginners, so we have provided an example below using two NFL football teams:

American Odds

• Matchup Odds
• New England Patriots +120
• Pittsburgh Steelers -140

The number shown in the bracket represents the odds. The American Odds have two components to them, the first being the positive or negative sign, and the second being the number that follows the sign.

The sign in front of the number indicates whether placing a wager on that outcome will pay out more money then you have wagered or less money then you have wagered. If the odd is negative (-) it means that outcome is more likely to happen and placing a bet on that outcome would payout less than the amount you wagered, while a positive (+) odd shows that the outcome is less likely to happen and it would pay out more than the amount you wagered.

The next step is figuring out exactly how much the bet pays out, which is where the numbers in the odds come into play.

A listed odd with a – sign in front of it, such as the -140 in our example above, shows us how much money you would need to wager in order to win $100. So using the -140, this would show us that you would need to bet $140 in order to win $100 in profits. You can easily substitute the $100 bet for a $10 bet by moving the decimal place over one spot, showing us that you would need to wager $14 in order to win $10 in profits.

Examples:

A listed odd with a + sign in front of it, such as the +120 in our example above, shows us how much money you would win on a $100 bet. Using the +120 odds, it shows us that a $100 bet on that outcome would pay out $120 in profits. Again this can easily be converted into smaller or larger size bets. A $10 bet on +120 odds would pay out $12 in profits.

Examples:

Below is an example of NFL betting odds taken from an online betting site.

In this example you can see Los Angeles is listed at +130 ($100 bet pays $130 plus of course your original wager back) and New England is listed at -150 ($150 bet pays $100).

The great thing about betting online is that the online sportsbooks will do the calculations for you before you place your bet. You can click on the outcome or team you would like to bet on, and then input the amount you wish to wager and it will show you your potential pay out before you confirm your bet.

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Decimal Style Sports Betting Odds

Decimal style odds are used mostly in Europe, and are pretty easy to understand. To calculate the decimal style odds all you will need to do is simply multiply the amount you wish to wager by the decimal odds shown and you will get your payout. For example it may look something like this:

If you wanted to place a $10 wager on the USA at 2.40 you would simply need to multiply your $10 wager by the 2.40 odds (10 x 2.40) to find out that the payout is $24. It is important to realize that with decimal style odds it includes the amount you wagered, so to find out profits you would need to subtract your wager ($24 – $10) to find out your potential payout is $14 in profits.

If you wanted to place a $10 wager on Brazil you would again just multiply $10 x 1.55 to find out that you would win $15.50 total or $5.50 in profits.

Decimal style betting odds are very simple to understand, but you won’t see them displayed in many North American sportsbooks. With that said, most online betting sites will allow you to chose the style of betting odds you want displayed, with American odds set as the default.

If there’s a sport that’s getting more popular as time goes by, it’s mixed martial arts (MMA). The Ultimate Fighting Championship (UFC) is, by far, the most popular promotion in MMA, both among sports fans and among bettors. If you belong to the latter category, you might be interested in learning more about Vegas odds in UFC.

That’s exactly what we’re going to deal with in this article.

How To Read Betting Odds Ratio

So, what are ‘Vegas’ odds? In a nutshell, those are the odds you will see in Nevada’s land-based sportsbooks, which often differ from those available online.

For Example

Let’s say you go to one of Las Vegas sportsbooks such as Golden Nugget, Wynn, or Caesars, that’s where you’re going to see odds displayed like this:

• Khabib Nurmagomedov (-150)
• Conor McGregor (-110)
• Stipe Miocic (+130)
• Shevchenko vs Maia Over 2.5 Rounds (-110)

You might have come across these sorts of odds, but this doesn’t necessarily mean you know what they mean. The truth is that a large number of bettors have no idea what Vegas odds are, let alone how to use them to calculate their potential winnings. Luckily, we’re here to help you learn everything about Vegas odds in UFC.

How Do UFC Odds Work?

If you see that odds on one fighter are presented as a negative number (e.g., Nurmagomedov -150), it means that they are the favorite. Likewise, if a fighter’s odds come with a positive number (e.g., Miocic +130), it means that the fighter in question is the underdog in that bout. The higher the number, the bigger favorite/underdog the fighter is.

If both fighters are given the same odds (usually -110), it means that they have equal chances of winning. The same applies to all the other markets, like the total number of rounds, method of victory, and so on.

How to Calculate Vegas Odds in UFC?

Now that you know what Vegas odds in UFC mean, the next obvious question is how can you use them to calculate your potential winnings. There are two formulas to use, depending on whether the Vegas odds are displayed as a positive or negative number.

If it’s a positive number, you should go with the following formula:

Vegas Odds/100 x Your Stake

The figure you get from this equation represents your net winning, but you should know that you will get your stake back as well.

If the fighter’s odds are displayed in negative, you should go with this formula:

Your Stake/Vegas Odds x 100

How Vegas Odds Help You Pick the Fight Winner?

Keep in mind that Vegas odds do not equal true probability. The fact that a fighter is a favorite to win does not necessarily mean he/she is actually better than the opponent. At least, not in every case. Sometimes, Vegas odds are reflective of bettors’ behavior. If they’re wagering a lot of money on one player, the odds are going to change in his favor.

Still, in most cases, Vegas odds are as close as possible to true probability. The thing is that the oddsmakers employed by big-name Las Vegas sportsbooks are really good at their job. The result is that the fighters labeled as favorites by Vegas oddsmakers win the fights most of the time.

Using Vegas Odds to Calculate Fighters’ Chances

You can use Vegas odds to calculate the favorite’s chance of winning the fight. It’s done through this formula:

Percentage = (Vegas Odds / (100 + Vegas Odds)) x 100

Note that in this formula you need to use a positive number, even though the odds on favorites are displayed as negative numbers. This may seem confusing, which is why we’re going to explain it through an example.

Explain Betting Odds Ratio Calculation

Let’s say you wish to see what are the chances of Jon Jones winning his next fight, you need to find the odds Vegas sportsbooks are giving on his win. If the odds are -120, for example, you need to divide 120 by 220 (100+120). The result you get, which in this case is 0.54, you need to multiply by 100 in order to get Jones’ chance represented as a percentage. In this case, his chance of winning would be 54%.

When it comes to calculating the probability that the underdog is going to win the fight, here’s the formula you should use:

Percentage = (100 / (100 + Price)) x 100

In this case, too, you will get the fighter’s chance displayed as a percentage. Apart from using these formulas to calculate chances of fighters winning, you can also use it for other wager types as well. This goes beyond UFC – you can use these formulas to calculate probability in literally any sport.