--- title: "AQo vs K9s: preflop equity" url: "https://georgelipoker.com/equity/aqo-vs-k9s.md" canonical_url: "https://georgelipoker.com/equity/aqo-vs-k9s" last_updated: "2026-10-23" type: "reference" summary: "AQo is a big favorite over K9s before the flop: 60.07% to 39.93% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqo-vs-a5s.md", "https://georgelipoker.com/equity/aqo-vs-a6s.md", "https://georgelipoker.com/equity/ajo-vs-k9s.md"] --- # AQo vs K9s: preflop equity AQo is a big favorite over K9s before the flop: 60.07% to 39.93% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, AQo holds 60.07% equity against K9s, which leaves K9s with 39.93%. ## AQo against K9s: the numbers **Exact preflop results for AQo against K9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AQo | 59.839 | 0.467 | 39.694 | 60.072 | | K9s | 39.694 | 0.467 | 59.839 | 39.928 | One side is an offsuit hand, the other is a suited hand. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other. AQo is ahead, but K9s is far from dead: it takes 397 of every 1,000 deals outright. Split pots make up 0.47% of the boards, and both equity figures count them as half a win each. Among the 169 starting hands, AQo is number 14 and K9s is number 29 by strength against a random hand. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AQo | 49,182,000 | 384,000 | 32,625,000 | | K9s | 32,625,000 | 384,000 | 49,182,000 | 48 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand. **AQo 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) | | --- | --- | --- | --- | --- | | AQo | 1.505 | 1.671 | 2.519 | 0.665 | | K9s | 0.665 | 2.519 | 1.671 | 1.505 | 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 Split by what the flop looks like, AQo peaks at 63.33% on paired flops and bottoms out at 55.97% on low rainbow flops (nine high or lower). AQo stays ahead on all five textures. **AQo against K9s by flop texture, in percent** | Flop | Share of flops | AQo wins | Ties | K9s wins | AQo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.988 | 62.904 | 0.120 | 36.976 | 62.964 | | Rainbow, nine or lower | 7.042 | 55.456 | 1.024 | 43.520 | 55.968 | | Two-tone | 46.667 | 58.185 | 0.295 | 41.520 | 58.332 | | Monotone | 5.212 | 55.995 | 2.384 | 41.621 | 57.187 | | Paired | 17.091 | 63.030 | 0.608 | 36.362 | 63.334 | Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank. ## Compared with a random hand Against one random hand instead, AQo holds 64.43% and K9s holds 59.99%. Facing each other changes that by -4.36 points for AQo and -20.06 points for K9s. **AQo 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 | | --- | --- | --- | --- | --- | | AQo, all flops | 60.072 | 64.432 | -4.360 | 0.93233 | | AQo, rainbow, ten or higher | 62.964 | 64.432 | -1.468 | 0.97722 | | AQo, rainbow, nine or lower | 55.968 | 64.432 | -8.464 | 0.86864 | | AQo, two-tone | 58.332 | 64.432 | -6.100 | 0.90533 | | AQo, monotone | 57.187 | 64.432 | -7.245 | 0.88756 | | AQo, paired | 63.334 | 64.432 | -1.098 | 0.98296 | | K9s, all flops | 39.928 | 59.988 | -20.060 | 0.66560 | | K9s, rainbow, ten or higher | 37.036 | 59.988 | -22.952 | 0.61739 | | K9s, rainbow, nine or lower | 44.032 | 59.988 | -15.956 | 0.73401 | | K9s, two-tone | 41.668 | 59.988 | -18.320 | 0.69461 | | K9s, monotone | 42.813 | 59.988 | -17.175 | 0.71369 | | K9s, paired | 36.666 | 59.988 | -23.322 | 0.61122 | ## Does a shared suit matter? Two kinds of deal exist here. In 24 of them the hands share a suit and AQo holds 60.65%. In 24 they do not, and it holds 59.50%. AQo does better with a shared suit, by 1.15 points. **AQo against K9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AQo wins | Ties | K9s wins | AQo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 60.394 | 0.508 | 39.098 | 60.648 | | No shared suit | 24 | 50.00 | 59.284 | 0.426 | 40.290 | 59.497 | ## How often this matchup comes up Counting specific cards, AQo against K9s appears in 48 of the 1,624,350 ordered heads-up deals (0.0030%), and in 96 when the seats are swapped too (0.0059%). ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says AQo gets $120.14 of it on average and K9s gets $79.86. A thousand deals look like this: AQo takes 598, K9s takes 397, 5 are ties. ## The same matchup from the other side K9s versus AQo is this same page seen from the other hand: 39.93% for K9s, 60.07% for AQo. ## Keep exploring Open the calculator with AsQh against Kd9d already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking. - [Open AsQh against Kd9d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsQh&p2=Kd9d) - [AQo combos](https://georgelipoker.com/combos/aqo.md) - [K9s combos](https://georgelipoker.com/combos/k9s.md) - [AQo vs A5s](https://georgelipoker.com/equity/aqo-vs-a5s.md) - [AQo vs A6s](https://georgelipoker.com/equity/aqo-vs-a6s.md) - [AJo vs K9s](https://georgelipoker.com/equity/ajo-vs-k9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Method: exact enumeration. The 48 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AQo vs A5s: preflop equity](https://georgelipoker.com/equity/aqo-vs-a5s.md) - [AQo vs A6s: preflop equity](https://georgelipoker.com/equity/aqo-vs-a6s.md) - [AJo vs K9s: preflop equity](https://georgelipoker.com/equity/ajo-vs-k9s.md)