Hand odds / AK vs A9
AK vs A9: odds and equity
In short
AKo wins 71.9% of the time against A9o all in before the flop, A9o wins 23.4%, and they split the pot 4.7% of the time. AKo is a clear favourite, about 3 to 1. With AKo vs A9s the split is 70.0% to 30.0% in equity.
AKo
74.2%
A9o
25.8%
Equity: win% plus half of the 4.7% 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 A9s | 69.1% | 26.7% | 4.3% | 71.2% |
| AKs vs A9o | 73.1% | 22.4% | 4.5% | 75.4% |
| AKo vs A9s | 67.7% | 27.8% | 4.5% | 70.0% |
| AKo vs A9o | 71.9% | 23.4% | 4.7% | 74.2% |
What the flop does to it
When no 9 comes on the flop (87.8% of flops), AKo has 81.2% equity going to the turn. When one does, AKo drops to 24.6%.
A9o 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 A9o always, so this exact all-in comes straight off the charts.
| 6-max spot | Shove AKo | Call with A9o | Shove A9o | Call with AKo |
|---|---|---|---|---|
| Cutoff shoves, Big Blind calls, 10BB | 100% | 100% | 100% | 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% | 100% | 100% | 100% |
| Button shoves, Big Blind calls, 15BB | 100% | 100% | 100% | 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 A9?
- AKo. All in preflop it has 74.2% equity against A9o: 71.9% wins plus half of the 4.7% split pots. That's a clear favourite, about 3 to 1.
- Do suits change the odds?
- A little. AKs vs A9s is 71.2% to 28.8%; AKs vs A9o is 75.4% to 24.6%; AKo vs A9s is 70.0% to 30.0%; AKo vs A9o is 74.2% to 25.8%. Suited hands make more flushes, which is worth a few percent.
- What happens on the flop?
- When no 9 comes on the flop (87.8% of flops), AKo has 81.2% equity going to the turn. When one does, AKo drops to 24.6%.
- When does AK vs A9 happen in push/fold?
- At 10BB in 6-max, the Button shoves AKo always and the Big Blind calls with A9o 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 A9o, 1,712,304 boards each. The numbers are exact, not simulated.