--- title: "AA vs Q9s: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-q9s.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-q9s" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over Q9s before the flop: 81.08% to 18.92% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aa-vs-jts.md", "https://georgelipoker.com/equity/aa-vs-a2s.md", "https://georgelipoker.com/equity/kk-vs-q9s.md"] --- # AA vs Q9s: preflop equity AA is a big favorite over Q9s before the flop: 81.08% to 18.92% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts AA at 81.08% and Q9s at 18.92% when the two hands see all five board cards. ## AA against Q9s: the numbers **Exact preflop results for AA against Q9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 80.893 | 0.381 | 18.726 | 81.083 | | Q9s | 18.726 | 0.381 | 80.893 | 18.917 | AA, a pocket pair, plays Q9s, a suited hand. A pair against two lower cards is a lopsided matchup: the pair is ahead and the other hand has no overcard to catch. A gap this wide means Q9s is in trouble before the flop and has few good runouts. Ties are part of the picture: 0.38% of boards end in a split pot, and each side counts that as half a win. In the ranking of all 169 starting hands, AA is number 1 and Q9s is number 43. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AA | 33,243,000 | 157,000 | 7,696,000 | | Q9s | 7,696,000 | 157,000 | 33,243,000 | Exact total: 24 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. **AA against Q9s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AA | 4.286 | 1.236 | 5.340 | 0.233 | | Q9s | 0.233 | 5.340 | 1.236 | 4.286 | 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 Split by what the flop looks like, AA peaks at 86.99% on low rainbow flops (nine high or lower) and bottoms out at 75.38% on monotone flops. AA stays ahead on all five textures. **AA against Q9s by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | Q9s wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 81.710 | 0.153 | 18.137 | 81.787 | | Rainbow, nine or lower | 7.042 | 86.497 | 0.993 | 12.510 | 86.993 | | Two-tone | 46.545 | 79.167 | 0.317 | 20.516 | 79.326 | | Monotone | 5.212 | 74.172 | 2.406 | 23.422 | 75.375 | | Paired | 17.334 | 84.146 | 0.007 | 15.847 | 84.149 | 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 85.20%, AA changes by -4.12 points, and Q9s, from 57.66%, by -38.74. **AA and Q9s 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 | | --- | --- | --- | --- | --- | | AA, all flops | 81.083 | 85.204 | -4.121 | 0.95163 | | AA, rainbow, ten or higher | 81.787 | 85.204 | -3.417 | 0.95990 | | AA, rainbow, nine or lower | 86.993 | 85.204 | +1.789 | 1.02100 | | AA, two-tone | 79.326 | 85.204 | -5.878 | 0.93101 | | AA, monotone | 75.375 | 85.204 | -9.829 | 0.88464 | | AA, paired | 84.149 | 85.204 | -1.055 | 0.98762 | | Q9s, all flops | 18.917 | 57.664 | -38.747 | 0.32806 | | Q9s, rainbow, ten or higher | 18.213 | 57.664 | -39.451 | 0.31585 | | Q9s, rainbow, nine or lower | 13.007 | 57.664 | -44.657 | 0.22557 | | Q9s, two-tone | 20.674 | 57.664 | -36.990 | 0.35853 | | Q9s, monotone | 24.625 | 57.664 | -33.039 | 0.42704 | | Q9s, paired | 15.851 | 57.664 | -41.813 | 0.27489 | ## Does a shared suit matter? Split by suits, the deals give AA 81.70% when the hands overlap in a suit and 80.47% when they do not. AA does better with a shared suit, by 1.23 points. **AA against Q9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | Q9s wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 81.486 | 0.422 | 18.092 | 81.697 | | No shared suit | 12 | 50.00 | 80.300 | 0.339 | 19.361 | 80.470 | ## How often this matchup comes up AA against Q9s is made up of 24 specific-card matchups in one seat order, 0.0015% of the 1,624,350 ordered deals, and 48 counting both seat orders, 0.0030%. ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average AA takes back $162.16 of it, which is $62.16 more than it put in, and Q9s takes back $37.84, $62.16 less than it put in. Out of 1,000 deals you should see around 809 outright wins for AA, 187 for Q9s, and 4 split pots. ## The same matchup from the other side The reversed view, Q9s against AA, shows 18.92% for Q9s and 81.08% for AA. It is the same count, so it redirects here. ## Keep exploring Open the calculator with AsAh against Qd9d 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 AsAh against Qd9d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=Qd9d) - [AA combos](https://georgelipoker.com/combos/aa.md) - [Q9s combos](https://georgelipoker.com/combos/q9s.md) - [AA vs JTs](https://georgelipoker.com/equity/aa-vs-jts.md) - [AA vs A2s](https://georgelipoker.com/equity/aa-vs-a2s.md) - [KK vs Q9s](https://georgelipoker.com/equity/kk-vs-q9s.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 24 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 - [AA vs JTs: preflop equity](https://georgelipoker.com/equity/aa-vs-jts.md) - [AA vs A2s: preflop equity](https://georgelipoker.com/equity/aa-vs-a2s.md) - [KK vs Q9s: preflop equity](https://georgelipoker.com/equity/kk-vs-q9s.md)