9♣9♠ BB vs SB, river on K♠ 7♦ 5♥ 2♣ 2♠, 100 bb
The spot
- You: BB
- Opponent: SB
- Your hand: 9♣9♠
- Board: K♠ 7♦ 5♥ 2♣ 2♠
- Effective stack: 100 bb
- Pot: 30 bb
HU 3‑bet pot. BB check-called flop and turn; river pairs the bottom card and SB jams pot.
Best river decision with 99 (second pair) facing the jam?
See the answer
Best play: Call
Why
Principle: bluff‑catcher MDF requires defending the indifferent portion of your range, especially on paired boards where bluffs are easy. Applied to 99 on K75-2‑2: the jam is polar: missed straight draws can only win by betting, and 99 beats all of them. So: call — folding 99 here under-defends and trains opponents to overbluff every paired river.
Key idea
On paired rivers where strong made hands acted earlier, the jam range is bluff-heavy, so a second pair must call to meet MDF and avoid being exploited by overbluffing.