Arbitrage betting - taking advantage of bookmakers differing odds
Arbitrage betting is a tactic used in gambling that entails wagering on all possible outcomes of an event.
The Arbitrage Calculator, How does it work
The calculator lets you input the odds for two or more bets so that you can calculate how much money to bet on each outcome and supposing to guarantee a profit. An arbitrage bet is only possible when there is a discrepancy in odds, If the return on investment (ROI) is negative, then no profit can be made, and you will have a guaranteed loss.