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Outplay the bookies
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Many bettors heard about the EV Betting, but not all of them understand how to apply said strategy in practice. As you may already understood, today we are going to focus on the value bets and understand their effectiveness through a real example.
Negative -EV is a situation in sports betting when the bettors's expected profit from a wager is negative in the long run. The probability of winning in the game is lower than expected.
Positive +EV, on the other hand, is a situation when the bettor's expected profit from a wager is positive in the long run. The probability of winning in the game is higher than expected. In other words, over a long period of time (100 bets), you need to find sports events where one of the outcomes has a positive expected value (+EV) and place bets on such outcomes.
EV betting is an effective strategy based on searching for profitable/undervalued by the bookmakers outcomes. The bettor need to search for and bet only on the outcomes having more chances of winning than estimated by the bookmakers. Value betting is not a win-win strategy, but it can bring tangible profit in the long run. Furthermore, a bettor can significantly increase the likelihood of its winnings in almost every bet combining EV betting with other systems.
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Undervalued odds don't appear out of nowhere, they can be generated due to a variety of reasons:
You can get and calculate Expected Values by using simple calculations, but it's useful to be able to evaluate the probability of an event on your own.
First you need to convert the odds into a probability using the following formula:V = (1/K)*100, where V means the percentage probability and K is the bookmaker's odds.
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Outplay the bookies
At this stage, you need to calculate not only the probabilities set by the bookmaker, but also your own ones. And then the value of the bet can be calculated using a simple formula:
Val = VG/VB, where VG means the bettor's expected probability, and VB is the bookmaker's one.
If the result (Val) is higher than 1, then we have a value bet that you can and should bet on.
Let's consider the calculation of the Expected Value using a real example. For our calculations, let’s take the "Ecuador wins" outcome in the 2022 World Cup group stage match between the national teams of Qatar and Ecuador. The bookmaker has set a 2.23 odds for this outcome, while we rated the event with a 1.9 odds. Let's calculate the probability of the outcome and get the value of the bet.
VB = (1/2.23)*100 = 44.84%
VG = (1/1.9)*100 = 52.63%
Val = 52.63% / 44.84% = 1.17
As you can see, the value is greater than 1, and it means that we have a value bet.
| Team | ODDS |
| Philadelphia Flyers | -122 |
| Pittsburgh Penguins | +110 |
We have $100 for a bet. To determine which team to wager on, let's use the following algorithm:
Bookmaker's line / (Bookmaker's line + 100) x 100%If the bookmaker's line is positive (+110):Philadelphia Flyers: 122 / (122 + 100) x 100% = 54.95%
100 / (Bookmaker's line + 100) x 100%Pittsburgh Penguins: 100 / (110 + 100) x 100% = 47.62%
You may notice that 54.95% + 47.62% = 102.57%. The extra 2.57% represents the bookmaker's margin or vigorish on that particular event.
For a $100 bet on odds of -122, our total payout would be $182, and the net profit would be $82. If we lose, we would lose our $100 wager.
EV = (Winning percentage x Amount won on bet) - (Losing percentage x Amount lost on bet)
In our case, we need to substitute the following numbers:
EV = (0.5495 x $82) - (0.4762 x $100) = $45.06 - $47.62 = -$2.56
We got a negative EV value of -$2.56. This means that if you will constanyly bet on outcomes with such value, you will lose $2.56 on each $100 bet in the long run. Such bets should be avoided if you are aiming for long-term profitability.
In the foresaid example, we viewed a scenario where the bookmaker set the chance of Philadelphia Flyers winning at 54.95%. However, based on your own analysis or betting lines of ethalon bookmakers that believe the chance is actually higher, you may assume that the chance of Philadelphia Flyers winning is 60%. In that case, we would have the following EV value:
EV = (0.6 x $82) - (0.4257 x $100) = $49.2 - $42.57 = +$6.63
This is now a positive +EV. Therefore, we can recommend to place a bet on such outcome.
The main complexity here is in determining the true probability (through analysis or by comparing different bookmakers). We recommend to pay attention on the EV Betting tool by BetBurger. With this tool, you can outsmart any bookmaker!
To determine American odds based on a probability expressed in percentages, you need to use one of the following formulas:
1.If the probability of an event is more than 50%, use the following formula:((probability) / (100 - probability)) x 1002.If the probability of an event is less than 50%, use the following formula:
((100 - probability) / probability) x 100
Value betting is widely used by experienced bettors due to the strategy having a number of undeniable advantages. We'll not describe all the pros of EV Betting – here are the most important of them:
All bookmakers include the margin (their guaranteed profit) into its odds. The usual margin is 3-5%, but there are the bookies charging their clients up to 8-10%.
The bookmaker's margin plays a significant role in value betting. When calculating the betting probability, the bettor is not taking the margin into account, setting the equal chances of the teams as 50% to 50%. At the same time, the bookmakers will set the equal team chances as 52.5%, since the total probability must exceed 100% due to the size of the margin (in our case, we took the average margin value of 5%). So the bookmaker set the probability of an event not as 100%, but as 105%.
When searching for value bets, never account for a margin when calculating your own betting probability of the outcome of an event but also do not forget that the bookies do so. Doing so, you will be able to find more value bets, significantly increasing your chances of success.
Let's consider a match between Team #1 and Team #2. In this particular match, only one outcome is possible - either Team #1 wins or Team #1 loses. The bookmaker offers the following odds:
| Team | ODDS |
| TEAM 1 | +120 |
| TEAM 2 | -140 |
1.Let's convert the bookmaker's odds of +120 into a percentage probability using the formula for positive odds (+120):
100 / (120 + 100) x 100% = 45.45%
2.Let's convert the bookmaker's odds of -140 into a percentage probability using the formula for negative odds (-140):
140 / (140 + 100) x 100% = 58.33%
3.Now let's add the probabilities together:
45.45% + 58.33% = 103.78%
Now we can determine the exact value of the vigorish (Vig): 103.78% - 100% = 3.78%. This value represents the bookmaker's margin (or Vig) embedded in this event.
You need to understand that it is not only important to find discrepancies in odds but also to ensure that the discrepancy is greater than the value of the Vig (in our case, 3.78%). If it turns out to be smaller, your bet will not be considered +EV.
It is quite time-consuming to search for value bets on your own - you need to manually evaluate the events and make all necessary calculations. However, in the world of betting, there are value bet scanners which make the process as easy as possible. Among the truly handy scanners, can't be ignored the BetBurger service.
Our value bet scanner takes over the entire process of value bet scanning, offering you all suitable events in a matter of seconds. All you have to do then is wager your bet and wait for the result. BetBurger software analyzes data from over 200 bookmakers across 40+ of sports. With it, you can always easily and quickly find value bets using the EV betting strategy.
| Bookmakers | ODDS | Payout |
| B1 for calculation | 1,75 | 93,5$ |
| B2 for calculation | 1,85 | 95,5$ |
| B3 for calculation | 1,83 | 96,0$ |
| B1 for display | 1,99 | 100$ |
B1 for display (Valuebet) is a bookmaker that searches for Valuebets (inflated odds).
B1/B2/B3 for calculation refers to the bookmaker against which the search for favorable odds is conducted.
Payout is the total return amount for bets on opposing outcomes, totaling 100.
You should understand that the higher the bookmaker's margin, the lower the payout. According to our formula, the payout for the Valuebet display will be 100$.
Based on the calculation formula, it can be seen that the odds of 1.99 are inflated by the bookmaker by 2.25%. We can gain an advantage of 2.25% from the bookmaker because their line has an error. We determined this by comparing the odds for a specific outcome in our bookmaker and several top bookmakers.
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