Effective stack
★★☆eff.
Basic Definition
The effective stack in poker refers to the smaller stack size between two players when they face off, essentially representing the maximum amount that can be wagered in the match. This is particularly important when your opponent's stack is smaller than yours. It is sometimes abbreviated as "eff."
Specific Situation
- If your stack is 500BB and your opponent's stack is 300BB, the effective stack is 300BB. Neither player can bet more than 300BB.
- When your stack is 200BB and your opponent's stack is 50BB, the effective stack is 50BB, and actions during the game are calculated with 50BB as the upper limit.
Important Information
- The effective stack greatly influences decision-making based on pot odds and risk. It is an important concept, especially in all-in strategies and short stack play.
- In multi-way pots (pots involving multiple players), it's important to note that the effective stack may differ between you and each of the other players involved.
Examples of Term Usage
"It might not be worth aiming for a set mine with a pocket pair because the opponent's effective stack is shallow."