SPR stands for Stack-to-Pot Ratio, which is the ratio of the shortest stack in the hand (aka the effective stack) divided by the pot on any given street. For example, if the pot is $10 and the effective stack is $100, the SPR is 10 (100/10).
Want to learn the strategic value of SPR? Read this guide:
« View All Poker Terms3 Hand Histories That Highlight a Sneakily Crucial Poker Concept (Stack-to-Pot Ratio)