--- title: "AQs vs A9s: preflop equity" url: "https://georgelipoker.com/equity/aqs-vs-a9s.md" canonical_url: "https://georgelipoker.com/equity/aqs-vs-a9s" last_updated: "2026-10-23" type: "reference" summary: "AQs is a big favorite over A9s before the flop: 70.66% to 29.34% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqs-vs-ato.md", "https://georgelipoker.com/equity/aqs-vs-kjs.md", "https://georgelipoker.com/equity/ajs-vs-a9s.md"] --- # AQs vs A9s: preflop equity AQs is a big favorite over A9s before the flop: 70.66% to 29.34% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 70.66% for AQs and 29.34% for A9s, so AQs leads by 41.32 points. ## AQs against A9s: the numbers **Exact preflop results for AQs against A9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AQs | 67.996 | 5.333 | 26.671 | 70.662 | | A9s | 26.671 | 5.333 | 67.996 | 29.338 | Each side holds one of the suited hands: AQs and A9s. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing. That is a clear edge, 70.66% to 29.34%, but A9s still wins often enough that one hand proves nothing. A split pot comes up on 5.33% of boards, so the wins and the equity differ by half of that. The hand ranking puts AQs at 10 and A9s at 18 out of 169 starting hands. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AQs | 13,972,000 | 1,096,000 | 5,480,000 | | A9s | 5,480,000 | 1,096,000 | 13,972,000 | 12 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. **AQs against A9s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AQs | 2.409 | 1.471 | 3.749 | 0.415 | | A9s | 0.415 | 3.749 | 1.471 | 2.409 | The final column gives the least the pot must offer for each unit called for a call to break even at this equity. ## Who is ahead on which flops The flop changes the picture. AQs does best on rainbow flops topped by a ten or better, at 77.00%, and worst on low rainbow flops (nine high or lower), at 59.69%. AQs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AQs against A9s by flop texture, in percent** | Flop | Share of flops | AQs wins | Ties | A9s wins | AQs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 75.293 | 3.419 | 21.288 | 77.002 | | Rainbow, nine or lower | 7.042 | 57.555 | 4.268 | 38.177 | 59.689 | | Two-tone | 46.543 | 68.450 | 3.275 | 28.275 | 70.087 | | Monotone | 5.215 | 61.711 | 5.200 | 33.089 | 64.311 | | Paired | 17.333 | 62.862 | 13.969 | 23.169 | 69.847 | A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank. ## Compared with a random hand Start from the random-hand figures, 66.21% for AQs and 62.78% for A9s. This opponent changes them by +4.45 and -33.44 points. **AQs and A9s 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 | | --- | --- | --- | --- | --- | | AQs, all flops | 70.662 | 66.209 | +4.453 | 1.06726 | | AQs, rainbow, ten or higher | 77.002 | 66.209 | +10.793 | 1.16301 | | AQs, rainbow, nine or lower | 59.689 | 66.209 | -6.520 | 0.90152 | | AQs, two-tone | 70.087 | 66.209 | +3.878 | 1.05857 | | AQs, monotone | 64.311 | 66.209 | -1.898 | 0.97133 | | AQs, paired | 69.847 | 66.209 | +3.638 | 1.05495 | | A9s, all flops | 29.338 | 62.781 | -33.443 | 0.46731 | | A9s, rainbow, ten or higher | 22.998 | 62.781 | -39.783 | 0.36632 | | A9s, rainbow, nine or lower | 40.311 | 62.781 | -22.470 | 0.64209 | | A9s, two-tone | 29.913 | 62.781 | -32.868 | 0.47647 | | A9s, monotone | 35.689 | 62.781 | -27.092 | 0.56847 | | A9s, paired | 30.153 | 62.781 | -32.628 | 0.48029 | ## Does a shared suit matter? These two classes cannot share a suit in any legal deal, so there is only one row to read: AQs holds 70.66% in every deal of this matchup. **AQs against A9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AQs wins | Ties | A9s wins | AQs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 67.996 | 5.333 | 26.671 | 70.662 | ## How often this matchup comes up AQs against A9s is made up of 12 specific-card matchups in one seat order, 0.0007% of the 1,624,350 ordered deals, and 24 counting both seat orders, 0.0015%. ## A worked example With $100 from each side, the $200 pot is split on average as $141.32 for AQs and $58.68 for A9s; the first side gains $41.32 per all-in and the second gives up $41.32. A thousand deals look like this: AQs takes 680, A9s takes 267, 53 are ties. ## The same matchup from the other side A9s against AQs adds nothing new: it is 29.34% for A9s and 70.66% for AQs, the same figures reversed. ## Keep exploring Open the calculator with AsQs against Ah9h 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 AsQs against Ah9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsQs&p2=Ah9h) - [AQs combos](https://georgelipoker.com/combos/aqs.md) - [A9s combos](https://georgelipoker.com/combos/a9s.md) - [AQs vs ATo](https://georgelipoker.com/equity/aqs-vs-ato.md) - [AQs vs KJs](https://georgelipoker.com/equity/aqs-vs-kjs.md) - [AJs vs A9s](https://georgelipoker.com/equity/ajs-vs-a9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 12 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AQs vs ATo: preflop equity](https://georgelipoker.com/equity/aqs-vs-ato.md) - [AQs vs KJs: preflop equity](https://georgelipoker.com/equity/aqs-vs-kjs.md) - [AJs vs A9s: preflop equity](https://georgelipoker.com/equity/ajs-vs-a9s.md)