“Eight outs”. The answer can come almost automatically when we have an open-ended straight draw on the flop. Mathematically it seems simple, but in poker there is a much more important question: how many of those outs really help us win?
A nominal out is any card that completes our draw. However, some can simultaneously improve an opponent’s hand. That’s where the so-called dirty outs come in, whose value must be analyzed according to the board, previous action, and number of players involved.
Let’s look at an example. We have 8 7 on a flop of K 6 5. Any 4 or 9 completes our straight, so initially we count eight outs.
But there is an important detail.
The 4 9 also bring a third spade to the board. If our opponent can reasonably have two spades, those cards could give us the straight while simultaneously completing their flush. Therefore, counting all eight outs as equally favorable can inflate our true expectation.
First You Have To Count The Outs And Determine Which Ones Can Really Give You The Best Hand.
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With eight outs, the mathematical chance of hitting on the turn is 17%, while hitting at least one between turn and river is around 31.5%. If we conservatively consider only six cleaner outs, those figures drop to 12.8% and 24.1%, respectively.
The popular rule of 4 and 2 is still useful: multiply your outs by four on the flop to estimate the odds until the river and by two on the turn for the next card. But order matters.
First we must identify our draw, count the nominal outs and then ask which ones can really give us the best hand. Only then should the formula be applied.
Because the real challenge is not knowing how to count to eight. It is understanding that, in poker, a card that improves our hand does not always improve our situation.
