 In the same situation as above, another bookmaker (Bookmaker 3) is offering odds of 1.95 on the Under 2.5 outcome (unlikely).Sum of reciprocals = 1/(decimal odds at Bookmaker 1) + 1/(decimal odds at Bookmaker 3) = 1/2.1 + 1/1.95 = 0.476 + 0.513 = 0.989

Therefore, this would give a profit of 1.1% (1 - 0.989 = 0.011) on the total stakes.In this instance, betting $100 on Over 2.5 and $107.69 on Under 2.5 would result in a guaranteed profit of around $2.31.