A♣5♣ CO vs BTN, preflop, 60 bb
The spot
- You: CO
- Opponent: BTN
- Your hand: A♣5♣
- Board: preflop, no board yet
- Effective stack: 60 bb
- Pot: 3 bb
6‑max reg battle node with meaningful frequency tradeoffs.
Best core-reg decision?
See the answer
Best play: Call
Why
CALL frames A5s as a continue/flat hand: in a CO-vs-BTN reg battle it has too much equity to fold but is better off flatting than reraising, since it realizes ace-high plus nut-flush and wheel-straight potential cheaply rather than turning a playable hand into a bluff. The suited wheel ace flats well because its nut-flush blocker and backdoor straights give clean, high-equity runouts when called.
Key idea
Suited wheel aces are classic flat-or-fold hands in position: calling keeps dominated weaker aces in and captures nut-flush implied odds, while reraising them mostly just isolates against stronger holdings. Let position and the nut blocker do the work over many streets.
Common mistake
Auto-reraising every suited ace and turning A5s into a bluff that gets called by better, or folding it entirely and surrendering its nut-flush equity in position.