--- title: "AQo vs A9o: preflop equity" url: "https://georgelipoker.com/equity/aqo-vs-a9o.md" canonical_url: "https://georgelipoker.com/equity/aqo-vs-a9o" last_updated: "2026-10-23" type: "reference" summary: "AQo is a big favorite over A9o before the flop: 73.68% to 26.32% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqo-vs-kjo.md", "https://georgelipoker.com/equity/aqo-vs-55.md", "https://georgelipoker.com/equity/ajo-vs-a9o.md"] --- # AQo vs A9o: preflop equity AQo is a big favorite over A9o before the flop: 73.68% to 26.32% equity, counted exactly over every board, with the split by flop type and suit. In equity, AQo against A9o stands at 73.68% to 26.32%, a gap of 47.36 points. ## AQo against A9o: the numbers **Exact preflop results for AQo against A9o, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AQo | 70.757 | 5.849 | 23.394 | 73.682 | | A9o | 23.394 | 5.849 | 70.757 | 26.318 | Each side holds one of the offsuit hands: AQo and A9o. 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. AQo is well ahead, and A9o needs a specific kind of board to catch up. Split pots make up 5.85% of the boards, and both equity figures count them as half a win each. In the ranking of all 169 starting hands, AQo is number 14 and A9o is number 25. **Boards behind the percentages: 184,928,832 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AQo | 130,850,000 | 10,816,000 | 43,262,000 | | A9o | 43,262,000 | 10,816,000 | 130,850,000 | 108 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 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) | | --- | --- | --- | --- | --- | | AQo | 2.800 | 1.413 | 4.275 | 0.357 | | A9o | 0.357 | 4.275 | 1.413 | 2.800 | 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 AQo prefers rainbow flops topped by a ten or better, where it holds 78.87%, and likes low rainbow flops (nine high or lower) least, where it holds 60.35%. AQo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AQo against A9o by flop texture, in percent** | Flop | Share of flops | AQo wins | Ties | A9o wins | AQo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.003 | 77.078 | 3.590 | 19.332 | 78.873 | | Rainbow, nine or lower | 7.042 | 58.047 | 4.604 | 37.349 | 60.349 | | Two-tone | 46.477 | 72.095 | 3.755 | 24.150 | 73.973 | | Monotone | 5.144 | 66.309 | 4.587 | 29.104 | 68.602 | | Paired | 17.334 | 64.901 | 15.474 | 19.625 | 72.638 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 64.43%, AQo changes by +9.25 points, and A9o, from 60.77%, by -34.45. **AQo 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 | | --- | --- | --- | --- | --- | | AQo, all flops | 73.682 | 64.432 | +9.250 | 1.14356 | | AQo, rainbow, ten or higher | 78.873 | 64.432 | +14.441 | 1.22413 | | AQo, rainbow, nine or lower | 60.349 | 64.432 | -4.083 | 0.93663 | | AQo, two-tone | 73.973 | 64.432 | +9.541 | 1.14808 | | AQo, monotone | 68.602 | 64.432 | +4.170 | 1.06472 | | AQo, paired | 72.638 | 64.432 | +8.206 | 1.12736 | | A9o, all flops | 26.318 | 60.773 | -34.455 | 0.43305 | | A9o, rainbow, ten or higher | 21.127 | 60.773 | -39.646 | 0.34764 | | A9o, rainbow, nine or lower | 39.651 | 60.773 | -21.122 | 0.65244 | | A9o, two-tone | 26.027 | 60.773 | -34.746 | 0.42827 | | A9o, monotone | 31.398 | 60.773 | -29.375 | 0.51664 | | A9o, paired | 27.362 | 60.773 | -33.411 | 0.45023 | ## Does a shared suit matter? Split by suits, the deals give AQo 73.79% when the hands overlap in a suit and 73.31% when they do not. AQo does better with a shared suit, by 0.48 points. **AQo against A9o by suit overlap, in percent** | Deals | Specific deals | Share of deals | AQo wins | Ties | A9o wins | AQo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 84 | 77.78 | 70.849 | 5.876 | 23.275 | 73.787 | | No shared suit | 24 | 22.22 | 70.436 | 5.754 | 23.810 | 73.313 | ## How often this matchup comes up AQo 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 Worked example: both players commit $100, so $200 sits in the middle. Over every board, AQo's average share is $147.36 (a gain of $47.36) and A9o's is $52.64 (a loss of $47.36). In 1,000 deals of exactly this matchup, expect about 708 won outright by AQo, about 234 won outright by A9o and about 58 split. ## The same matchup from the other side One page covers both views. From A9o's side the equity is 26.32%, and from AQo's side it is 73.68%. ## Keep exploring Try AsQh 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 AsQh against Ad9c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsQh&p2=Ad9c) - [AQo combos](https://georgelipoker.com/combos/aqo.md) - [A9o combos](https://georgelipoker.com/combos/a9o.md) - [AQo vs KJo](https://georgelipoker.com/equity/aqo-vs-kjo.md) - [AQo vs 55](https://georgelipoker.com/equity/aqo-vs-55.md) - [AJo vs A9o](https://georgelipoker.com/equity/ajo-vs-a9o.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed All 1,712,304 five-card boards are dealt for every suit pattern among the 108 specific deals of AQo against A9o, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AQo vs KJo: preflop equity](https://georgelipoker.com/equity/aqo-vs-kjo.md) - [AQo vs 55: preflop equity](https://georgelipoker.com/equity/aqo-vs-55.md) - [AJo vs A9o: preflop equity](https://georgelipoker.com/equity/ajo-vs-a9o.md)