Strategy: Pot Odds
August 18, 2008 - Shaun Appleton
(Credit: ian of leam) 
Pot odds is one of the most fundamental parts of poker to firstly understand and then master. Any good poker player uses maths to work out whether to continue in a hand or to fold. Many players misunderstand and misuse pot odds, usually to their loss.
In their very simplest form pot-odds can be likened to the odds you get when sports betting. In poker you will be offered a variety of odds to call a bet and also offer different odds to your opponent. For example with no cards to come and a pot totaling $45 you are the last to act – it will cost you just $5 to call the last bet so you are being offered pot-odds of 9-to-1. Whether you call this last bet (assuming you decided not to raise!) is determined by whether you think you will win the pot more than once in every 9 times that you call.
Pot-odds are also used to assess whether to make a call with more cards to come. For example you hold 10-Jack and the flop comes 3-Queen-King. You feel that your opponent holds a king and nothing else and know that any ace or 9 on the turn or river will make you the best hand. With 8 winning cards out of 47 unseen cards on the turn you are just over 4.3/1 to make the best hand.
Your knowledge of outs can then be combined with the pot-odds on offer. If the pot is offering you more than this price then your call will make money over time – if less you will lose money over time, whatever the outcome of the current hand.
Now let's say you have Ace King verses a low pocket pair, you miss the flop, so you have 6 outs (6 cards will help you 3 aces and 3 kings). This means you have about a 13% chance of hitting on the next card. If the pot is $90 and you must call $10, you should call, because you have more than a 10% chance to hit ($10 / $100). However, if the bet to you is $20, you should fold, because that would require a 18.2% chance of hitting ($20 / $110).
This takes a bit of time to really understand, but once you have done it over a period of time then it will come to you as second nature.
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