--- title: "AKo vs A9o: preflop equity" url: "https://georgelipoker.com/equity/ako-vs-a9o.md" canonical_url: "https://georgelipoker.com/equity/ako-vs-a9o" last_updated: "2026-10-23" type: "reference" summary: "AKo is a big favorite over A9o before the flop: 74.24% to 25.76% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ako-vs-kjo.md", "https://georgelipoker.com/equity/ako-vs-55.md", "https://georgelipoker.com/equity/ats-vs-a9o.md"] --- # AKo vs A9o: preflop equity AKo is a big favorite over A9o before the flop: 74.24% to 25.76% equity, counted exactly over every board, with the split by flop type and suit. In equity, AKo against A9o stands at 74.24% to 25.76%, a gap of 48.48 points. ## AKo against A9o: the numbers **Exact preflop results for AKo against A9o, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AKo | 71.878 | 4.727 | 23.395 | 74.241 | | A9o | 23.395 | 4.727 | 71.878 | 25.759 | Each side holds one of the offsuit hands: AKo and A9o. The two hands share a rank, and the one with the better other card dominates: it wins most kicker battles when that shared rank hits. That is a clear edge, 74.24% to 25.76%, but A9o still wins often enough that one hand proves nothing. About 4.73% of boards chop the pot, which is why equity sits slightly above the win figure for both hands. Among the 169 starting hands, AKo is number 12 and A9o is number 25 by strength against a random hand. **Boards behind the percentages: 184,928,832 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AKo | 132,923,000 | 8,742,000 | 43,264,000 | | A9o | 43,264,000 | 8,742,000 | 132,923,000 | The total is exact: 108 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **AKo against A9o read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AKo | 2.882 | 1.391 | 4.274 | 0.347 | | A9o | 0.347 | 4.274 | 1.391 | 2.882 | In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity. ## Who is ahead on which flops By flop texture, AKo's equity runs from 60.22% on low rainbow flops (nine high or lower) up to 79.45% on rainbow flops topped by a ten or better. AKo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AKo against A9o by flop texture, in percent** | Flop | Share of flops | AKo wins | Ties | A9o wins | AKo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.003 | 78.195 | 2.508 | 19.297 | 79.449 | | Rainbow, nine or lower | 7.042 | 57.904 | 4.627 | 37.469 | 60.217 | | Two-tone | 46.477 | 72.916 | 2.933 | 24.151 | 74.382 | | Monotone | 5.144 | 67.018 | 3.865 | 29.117 | 68.950 | | Paired | 17.334 | 67.468 | 12.906 | 19.626 | 73.921 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 65.32%, AKo changes by +8.92 points, and A9o, from 60.77%, by -35.01. **AKo and A9o here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | AKo, all flops | 74.241 | 65.320 | +8.921 | 1.13657 | | AKo, rainbow, ten or higher | 79.449 | 65.320 | +14.129 | 1.21630 | | AKo, rainbow, nine or lower | 60.217 | 65.320 | -5.103 | 0.92188 | | AKo, two-tone | 74.382 | 65.320 | +9.062 | 1.13873 | | AKo, monotone | 68.950 | 65.320 | +3.630 | 1.05557 | | AKo, paired | 73.921 | 65.320 | +8.601 | 1.13167 | | A9o, all flops | 25.759 | 60.773 | -35.014 | 0.42386 | | A9o, rainbow, ten or higher | 20.551 | 60.773 | -40.222 | 0.33816 | | A9o, rainbow, nine or lower | 39.783 | 60.773 | -20.990 | 0.65462 | | A9o, two-tone | 25.618 | 60.773 | -35.155 | 0.42154 | | A9o, monotone | 31.050 | 60.773 | -29.723 | 0.51092 | | A9o, paired | 26.079 | 60.773 | -34.694 | 0.42912 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, AKo has 74.35%; looking only at deals where they do not, 73.87%. AKo does better with a shared suit, by 0.48 points. **AKo against A9o by suit overlap, in percent** | Deals | Specific deals | Share of deals | AKo wins | Ties | A9o wins | AKo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 84 | 77.78 | 71.973 | 4.751 | 23.276 | 74.348 | | No shared suit | 24 | 22.22 | 71.547 | 4.643 | 23.810 | 73.869 | ## How often this matchup comes up AKo against A9o is made up of 108 specific-card matchups in one seat order, 0.0066% of the 1,624,350 ordered deals, and 216 counting both seat orders, 0.0133%. ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average AKo takes back $148.48 of it, which is $48.48 more than it put in, and A9o takes back $51.52, $48.48 less than it put in. In 1,000 deals of exactly this matchup, expect about 719 won outright by AKo, about 234 won outright by A9o and about 47 split. ## The same matchup from the other side If you came looking for A9o against AKo, the numbers are the same with the hands swapped: 25.76% and 74.24%. ## Keep exploring Try AsKh against Ad9c in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking. - [Open AsKh against Ad9c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsKh&p2=Ad9c) - [AKo combos](https://georgelipoker.com/combos/ako.md) - [A9o combos](https://georgelipoker.com/combos/a9o.md) - [AKo vs KJo](https://georgelipoker.com/equity/ako-vs-kjo.md) - [AKo vs 55](https://georgelipoker.com/equity/ako-vs-55.md) - [ATs vs A9o](https://georgelipoker.com/equity/ats-vs-a9o.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 108 specific AKo against A9o deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AKo vs KJo: preflop equity](https://georgelipoker.com/equity/ako-vs-kjo.md) - [AKo vs 55: preflop equity](https://georgelipoker.com/equity/ako-vs-55.md) - [ATs vs A9o: preflop equity](https://georgelipoker.com/equity/ats-vs-a9o.md)