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Old 02-19-2008, 02:06 AM   #3 (permalink)
Ganchrow
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Quote:
Originally Posted by Munson15 View Post
Are you saying that playing for a side with an under 5.5 goals and an over 5 goals would be profitable? Assuming that the juice is less than what %?
It could be profitable ... it depends on the payout odds offered on each bet (as well as your estimates of the probabilities of the game going over or under 5 -- unless you structure your bets irrespective of these probabilities). The juice is irrelevant.

Assuming you bet to equalize losses if the total lands other than 5 (thus rendering further probability estimates moot), then for a profitable betting opportunity to exist the decimal odds on the over and under must satisfy the following inequality:
du5½  >  do5
do5 - 74.398%


or equivalently

do5  >  74.398% ×  du5½
du5½ - 1
where do5 and du5½ correspond to the decimal odds on the over 5 and under 5½, respectively.

So, for example, if the odds on the over were -110, the odds on the under would need to be at least / ( - 74.968%) ≈ for a profitable half-middle to exist.

Conversely, if the odds on the under were -110, the odds on the over would need to be at least 74.968%* / ( - 1) ≈ for a profitable half-middle to exist.
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