K♦9♦ HJ vs CO, preflop, 105 bb
The spot
- You: HJ
- Opponent: CO
- Your hand: K♦9♦
- Board: preflop, no board yet
- Effective stack: 105 bb
- Pot: 3.5 bb
Villain opens and action is on hero preflop.
Which action keeps the best EV baseline?
See the answer
Best play: Call
Why
Hero holds K9s (K♦9♦ is K9 SUITED) facing a CO open, so the choice is 3‑bet, flat, or fold versus the opener. K9s is too dominated by the opener s better kings and aces to 3‑bet for value and too good to fold, so flatting is the textbook line: it realizes equity with a suited king while keeping the opener s range wide and avoiding reverse implied odds from 3-betting into dominating hands.
Key idea
Versus an open, a dominated suited broadway like K9s prefers a flat over a 3‑bet: 3-betting only folds out worse and gets called by kings that dominate your kicker, whereas flatting realizes its equity cheaply.
Common mistake
Turning K9s into a 3‑bet bluff versus an open, which folds out worse hands and gets stacked off against the dominating kings and aces it cannot beat.