--- title: "AKo vs K9s: preflop equity" url: "https://georgelipoker.com/equity/ako-vs-k9s.md" canonical_url: "https://georgelipoker.com/equity/ako-vs-k9s" last_updated: "2026-10-23" type: "reference" summary: "AKo is a big favorite over K9s before the flop: 71.75% to 28.25% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ako-vs-a5s.md", "https://georgelipoker.com/equity/ako-vs-a6s.md", "https://georgelipoker.com/equity/ats-vs-k9s.md"] --- # AKo vs K9s: preflop equity AKo is a big favorite over K9s before the flop: 71.75% to 28.25% equity, counted exactly over every board, with the split by flop type and suit. Over all 1,712,304 boards that can follow this deal, AKo finishes with 71.75% of the pot and K9s with 28.25%. ## AKo against K9s: the numbers **Exact preflop results for AKo against K9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AKo | 71.152 | 1.203 | 27.645 | 71.754 | | K9s | 27.645 | 1.203 | 71.152 | 28.246 | The matchup pits an offsuit hand against a suited hand. Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up. That is a clear edge, 71.75% to 28.25%, but K9s still wins often enough that one hand proves nothing. The tie share is 1.20%: on those boards the pot is chopped and neither hand wins outright. The hand ranking puts AKo at 12 and K9s at 29 out of 169 starting hands. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AKo | 43,860,000 | 742,000 | 17,041,000 | | K9s | 17,041,000 | 742,000 | 43,860,000 | Exact total: 36 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate. **AKo against K9s 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 | 2.540 | 1.405 | 3.617 | 0.394 | | K9s | 0.394 | 3.617 | 1.405 | 2.540 | The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity. ## Who is ahead on which flops If you know the kind of flop that came, the numbers shift: AKo holds 77.71% on rainbow flops topped by a ten or better and 59.78% on low rainbow flops (nine high or lower). 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 K9s by flop texture, in percent** | Flop | Share of flops | AKo wins | Ties | K9s wins | AKo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.905 | 77.246 | 0.936 | 21.818 | 77.714 | | Rainbow, nine or lower | 7.042 | 59.258 | 1.047 | 39.695 | 59.782 | | Two-tone | 46.527 | 69.438 | 0.885 | 29.677 | 69.881 | | Monotone | 5.192 | 65.132 | 2.600 | 32.268 | 66.432 | | Paired | 17.334 | 73.985 | 2.068 | 23.947 | 75.019 | 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 Against one random hand instead, AKo holds 65.32% and K9s holds 59.99%. Facing each other changes that by +6.43 points for AKo and -31.74 points for K9s. **AKo and K9s 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 | 71.754 | 65.320 | +6.434 | 1.09850 | | AKo, rainbow, ten or higher | 77.714 | 65.320 | +12.394 | 1.18974 | | AKo, rainbow, nine or lower | 59.782 | 65.320 | -5.538 | 0.91522 | | AKo, two-tone | 69.881 | 65.320 | +4.561 | 1.06983 | | AKo, monotone | 66.432 | 65.320 | +1.112 | 1.01702 | | AKo, paired | 75.019 | 65.320 | +9.699 | 1.14848 | | K9s, all flops | 28.246 | 59.988 | -31.742 | 0.47086 | | K9s, rainbow, ten or higher | 22.286 | 59.988 | -37.702 | 0.37151 | | K9s, rainbow, nine or lower | 40.218 | 59.988 | -19.770 | 0.67043 | | K9s, two-tone | 30.119 | 59.988 | -29.869 | 0.50208 | | K9s, monotone | 33.568 | 59.988 | -26.420 | 0.55958 | | K9s, paired | 24.981 | 59.988 | -35.007 | 0.41643 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, AKo has 72.90%; looking only at deals where they do not, 71.18%. AKo does better with a shared suit, by 1.72 points. **AKo against K9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AKo wins | Ties | K9s wins | AKo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 72.260 | 1.278 | 26.462 | 72.899 | | No shared suit | 24 | 66.67 | 70.598 | 1.165 | 28.237 | 71.181 | ## How often this matchup comes up How often does it happen? 36 of the 1,624,350 ordered deals (0.0022%) are AKo against K9s, and 72 (0.0044%) if either hand may sit in either seat. ## A worked example Put $100 each into a $200 pot and deal every board once: AKo averages $143.50 back, ahead of its $100 by $43.50, while K9s averages $56.50, short of its $100 by $43.50. Scaled to 1,000 deals, that is roughly 712 wins for AKo, 276 for K9s and 12 chopped pots. ## The same matchup from the other side K9s against AKo adds nothing new: it is 28.25% for K9s and 71.75% for AKo, the same figures reversed. ## Keep exploring Try AsKh against Kd9d 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 Kd9d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsKh&p2=Kd9d) - [AKo combos](https://georgelipoker.com/combos/ako.md) - [K9s combos](https://georgelipoker.com/combos/k9s.md) - [AKo vs A5s](https://georgelipoker.com/equity/ako-vs-a5s.md) - [AKo vs A6s](https://georgelipoker.com/equity/ako-vs-a6s.md) - [ATs vs K9s](https://georgelipoker.com/equity/ats-vs-k9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 36 specific AKo against K9s 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 A5s: preflop equity](https://georgelipoker.com/equity/ako-vs-a5s.md) - [AKo vs A6s: preflop equity](https://georgelipoker.com/equity/ako-vs-a6s.md) - [ATs vs K9s: preflop equity](https://georgelipoker.com/equity/ats-vs-k9s.md)