re: Poker & What is SPR in poker?
Stack to Pot Ratio. It means studying the relative sizes of the pot and of the players` stacks, in order to adjust your play accordingly.
Some rough examples -
When holding (say) an up and down straight draw on the flop, if there is $5 in the pot and both you and the opponent have $90 behind, you can call a modest flop bet, because you have the possibility to win a big pot if you hit. However, if the stacks are only $20, you should fold to a bet. In this case, the ultimate possible pot size isn`t enough to give you odds
Also, if you hit a big hand (but not the nuts) on the flop, and there is $5 in the pot with $20 behind, you can profitably bet all-in. However, if the stack sizes are again $90, an all-in bet is unwise (because you will force most of the hands that you beat to fold, and will only be called when you are behind).
Oh, sorry. That`s pretty much what the previous poster said too - obviously types faster than me.