AK vs A2s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AK (Ace-King) | 67.8% | 4.7% | 70.2% |
| A2s (Ace-Deuce Suited) | 27.5% | 4.7% | 29.8% |
Suited vs offsuit: AK
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| AKs | 68.9% | 4.5% | 71.1% |
| AKo | 67.5% | 4.7% | 69.8% |
How AK vs A2s unfolds by street
Ace-King (AK) is still ahead on 82% of flops against A2s, and the lead survives to the turn on 77%. A2s takes the lead on the other 18% of flops. These figures come from full board enumeration, not a simulation.
| Street | AK still ahead | A2s flipped the lead |
|---|---|---|
| Flop | 82% | 18% |
| Turn | 77% | 23% |
AK vs A2s is the matchup every "but I had top pair" cooler is made of: AK wins 67.8%, A2s wins 27.5%, and 4.7% of boards chop. With the shared rank gutting its outs, A2s is a 2.5-to-1 underdog, and 4.7% of runouts split outright when both play the common card.
At a final table the raw 70.2% / 29.8% split is only half the story — ICM bends it. As the 29.8% underdog, A2s pays an extra survival premium, so the chip-EV "close enough" call can be a clear ICM fold. The pure equity sets the floor; the payout ladder sets the real price.
The lesson of AK vs A2s is kicker discipline: A2s is the hand that quietly costs people stacks because it's too strong to fold and too dominated to win. If you hold AK, get value while you're ahead; if you hold the dominated side, this is the exact spot to find a preflop fold against a tight range.
AK vs A2s FAQ
Who wins AK vs A2s preflop?
AK (Ace-King) is the favorite, winning 67.8% of all runouts, while A2s (Ace-Deuce Suited) wins 27.5%. The remaining 4.7% are split pots. Counting splits as half, AK's preflop equity is 70.2%.
How often does A2s beat AK?
A2s wins 27.5% of the time all-in preflop against AK — roughly 1 in 4 — so it needs good pot odds or fold equity to get the money in profitably.
Why is A2s so bad against AK?
Because they share a card, A2s is drawing to roughly three outs and chops 4.7% of the time — it wins only about 1 in 4. That's the danger of a dominated hand: too strong to fold, too far behind to outdraw, which is how kicker problems quietly cost full stacks.
Does AK hold up against A2s after the flop?
AK is still ahead on 82% of flops and stays ahead through the turn on 77% of boards; A2s takes the lead on the other 18% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AK VS A3S · AK VS A4S · AK VS A5S · AK VS A6S · AK VS A7S · AK VS A8S