Arbitrage betting

Surebet called a bet that results for the combination of the quotas of all possible betting outputs, allowing thereby a profit, no matter how the bet goes. The word surebet comes from the English and literally means " safe bet ". With " safe bet " you mean so that when playing a surebet there is always a positive expectation.

The difficulty is to make a surebet with the ever-changing rates identified. There are services that offer rate comparisons and include an alarm as soon as the opportunity for a surebet results.

Formation

A crucial role for the occurrence of a surebet are rate differences at different bookmakers or betting shops, as they assess the participating athletes or teams differently with respect to their strength, ranking etc.. The surebet came up in the course of online betting, because the weather here quickly switch from one to another office and they can place bets.

The respective highest rates for any betting results are then approach taken for the bet. If the profit of each bet and output are above the entire set cost of the bet is called a surebet. Due to cancellations of bets, for example, due to different termination conditions of bookmakers, it may happen that a surebet also ends with a loss. The gains in this betting strategy often be a few % of capital employed ( in the example just under 5 %).

Example

In an sports betting in tennis one learns the following rates:

• Rate of betting office X when player A wins: 1.8
• Rate for betting shop Y when player B wins: 2.5

In tennis there are only 2 different betting outputs. Suppose one puts 100 units on Player A is the gain if player A wins, 180 units. If the same 72 sets units to player B, is the profit if player B wins, also 180 units. In total, 172 units for setting have been issued, get back to 180 units, no matter what the betting results. Thus, this yields a profit of 8 units.

Calculation

To bet on an event with only two possible outcomes ( win or lose, so no tie) and the quota for "victory" was = N, then you have - so a surebet is at all possible - the rate for "defeat" > M be here is M = (1 / (N -1 )) 1, for example, if the winning percentage = N = 1.8 (18 for 10 ), then a surebet is only possible if the betting odds for the opposite event greater 2.25 is. In other words, a Surebet is possible only if 1 / N 1 / M < 1 This can be generalized for more than two events to outputs: Surebet possible if 1/Q1 1/Q2 ... 1 / Qn < 1