Hand odds / AK vs A2
AK vs A2: odds and equity
In short
AKo wins 71.6% of the time against A2o all in before the flop, A2o wins 23.4%, and they split the pot 5.0% of the time. AKo is a clear favourite, about 3 to 1. With AKo vs A2s the split is 69.8% to 30.2% in equity.
AKo
74.1%
A2o
25.9%
Equity: win% plus half of the 5.0% split pots. AKo is a clear favourite, about 3 to 1.
Every suit combination
| Matchup | Hand 1 wins | Hand 2 wins | Split | Hand 1 equity |
|---|---|---|---|---|
| AKs vs A2s | 68.9% | 26.7% | 4.5% | 71.1% |
| AKs vs A2o | 72.9% | 22.4% | 4.7% | 75.3% |
| AKo vs A2s | 67.5% | 27.8% | 4.7% | 69.8% |
| AKo vs A2o | 71.6% | 23.4% | 5.0% | 74.1% |
What the flop does to it
When no 2 comes on the flop (87.8% of flops), AKo has 80.6% equity going to the turn. When one does, AKo drops to 27.1%.
A2o shares a card with AKo, so pairing that card doesn't help: it needs its other card to come. Domination like this is why calling with weaker hands of the same kind costs so much.
When this all-in happens in push/fold
At 10BB in 6-max, the Button shoves AKo always and the Big Blind calls with A2o always, so this exact all-in comes straight off the charts.
| 6-max spot | Shove AKo | Call with A2o | Shove A2o | Call with AKo |
|---|---|---|---|---|
| Cutoff shoves, Big Blind calls, 10BB | 100% | 0% | 98% | 100% |
| Button shoves, Big Blind calls, 10BB | 100% | 100% | 100% | 100% |
| Small Blind shoves, Big Blind calls, 10BB | 100% | 100% | 100% | 100% |
| Cutoff shoves, Big Blind calls, 15BB | 100% | 0% | 1% | 100% |
| Button shoves, Big Blind calls, 15BB | 100% | 0% | 99% | 100% |
| Small Blind shoves, Big Blind calls, 15BB | 100% | 100% | 100% | 100% |
How often each hand shoves or calls in our solved 6-max chip-EV charts. A row with both columns high is a spot where this exact all-in is correct for both players. See every chart.
Common questions
- Who is the favourite, AK or A2?
- AKo. All in preflop it has 74.1% equity against A2o: 71.6% wins plus half of the 5.0% split pots. That's a clear favourite, about 3 to 1.
- Do suits change the odds?
- A little. AKs vs A2s is 71.1% to 28.9%; AKs vs A2o is 75.3% to 24.7%; AKo vs A2s is 69.8% to 30.2%; AKo vs A2o is 74.1% to 25.9%. Suited hands make more flushes, which is worth a few percent.
- What happens on the flop?
- When no 2 comes on the flop (87.8% of flops), AKo has 80.6% equity going to the turn. When one does, AKo drops to 27.1%.
- When does AK vs A2 happen in push/fold?
- At 10BB in 6-max, the Button shoves AKo always and the Big Blind calls with A2o always, so this exact all-in comes straight off the charts.
- How were these odds worked out?
- By counting every possible five-card board for every combination of suits: 108 card combinations for AKo vs A2o, 1,712,304 boards each. The numbers are exact, not simulated.