--- title: "AJs vs Q9s: preflop equity" url: "https://georgelipoker.com/equity/ajs-vs-q9s.md" canonical_url: "https://georgelipoker.com/equity/ajs-vs-q9s" last_updated: "2026-10-23" type: "reference" summary: "AJs is a big favorite over Q9s before the flop: 61.84% to 38.16% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ajs-vs-jts.md", "https://georgelipoker.com/equity/ajs-vs-a2s.md", "https://georgelipoker.com/equity/ako-vs-q9s.md"] --- # AJs vs Q9s: preflop equity AJs is a big favorite over Q9s before the flop: 61.84% to 38.16% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 61.84% for AJs and 38.16% for Q9s, so AJs leads by 23.68 points. ## AJs against Q9s: the numbers **Exact preflop results for AJs against Q9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AJs | 61.588 | 0.496 | 37.916 | 61.836 | | Q9s | 37.916 | 0.496 | 61.588 | 38.164 | Two suited hands meet here: AJs against Q9s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. A 23.68 point lead is real, and Q9s still takes about 379 of every 1,000 deals outright. A split pot comes up on 0.50% of boards, so the wins and the equity differ by half of that. By strength against a random hand, AJs holds place 11 of 169 and Q9s holds place 43. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AJs | 16,873,000 | 136,000 | 10,388,000 | | Q9s | 10,388,000 | 136,000 | 16,873,000 | The total is exact: 16 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **AJs 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) | | --- | --- | --- | --- | --- | | AJs | 1.620 | 1.624 | 2.637 | 0.617 | | Q9s | 0.617 | 2.637 | 1.624 | 1.620 | 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 Break the boards down by their first three cards and AJs is strongest on paired flops (64.99%) and weakest on low rainbow flops (nine high or lower) (58.13%). AJs stays ahead on all five textures. **AJs against Q9s by flop texture, in percent** | Flop | Share of flops | AJs wins | Ties | Q9s wins | AJs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 63.025 | 0.113 | 36.862 | 63.082 | | Rainbow, nine or lower | 7.042 | 57.679 | 0.899 | 41.422 | 58.129 | | Two-tone | 46.727 | 60.835 | 0.258 | 38.907 | 60.964 | | Monotone | 5.273 | 56.962 | 3.407 | 39.631 | 58.666 | | Paired | 17.091 | 64.677 | 0.616 | 34.707 | 64.985 | 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 Relative to a random opponent, AJs changes by -3.55 points (baseline 65.39%) and Q9s by -19.50 points (baseline 57.66%). **AJs 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 | | --- | --- | --- | --- | --- | | AJs, all flops | 61.836 | 65.393 | -3.557 | 0.94561 | | AJs, rainbow, ten or higher | 63.082 | 65.393 | -2.311 | 0.96466 | | AJs, rainbow, nine or lower | 58.129 | 65.393 | -7.264 | 0.88892 | | AJs, two-tone | 60.964 | 65.393 | -4.429 | 0.93227 | | AJs, monotone | 58.666 | 65.393 | -6.727 | 0.89713 | | AJs, paired | 64.985 | 65.393 | -0.408 | 0.99376 | | Q9s, all flops | 38.164 | 57.664 | -19.500 | 0.66183 | | Q9s, rainbow, ten or higher | 36.918 | 57.664 | -20.746 | 0.64023 | | Q9s, rainbow, nine or lower | 41.871 | 57.664 | -15.793 | 0.72612 | | Q9s, two-tone | 39.036 | 57.664 | -18.628 | 0.67696 | | Q9s, monotone | 41.334 | 57.664 | -16.330 | 0.71681 | | Q9s, paired | 35.015 | 57.664 | -22.649 | 0.60722 | ## Does a shared suit matter? The suit split reads 64.18% for AJs with a shared suit and 61.06% without one. AJs does better with a shared suit, by 3.12 points. **AJs against Q9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AJs wins | Ties | Q9s wins | AJs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 63.891 | 0.573 | 35.536 | 64.178 | | No shared suit | 12 | 75.00 | 60.820 | 0.470 | 38.710 | 61.055 | ## How often this matchup comes up The class pair covers 16 combinations of specific cards in a fixed seat order, 0.0010% of 1,624,350, and 32 (0.0020%) in either order. ## A worked example Take a $200 pot built from $100 each. AJs' equity of 61.84% is worth $123.68, a $23.68 edge, and Q9s' 38.16% is worth $76.32, which is $23.68 under its stake. Out of 1,000 deals you should see around 616 outright wins for AJs, 379 for Q9s, and 5 split pots. ## The same matchup from the other side Q9s versus AJs is this same page seen from the other hand: 38.16% for Q9s, 61.84% for AJs. ## Keep exploring Try AsJs against Qh9h 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 AsJs against Qh9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsJs&p2=Qh9h) - [AJs combos](https://georgelipoker.com/combos/ajs.md) - [Q9s combos](https://georgelipoker.com/combos/q9s.md) - [AJs vs JTs](https://georgelipoker.com/equity/ajs-vs-jts.md) - [AJs vs A2s](https://georgelipoker.com/equity/ajs-vs-a2s.md) - [AKo vs Q9s](https://georgelipoker.com/equity/ako-vs-q9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 16 specific AJs against Q9s 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 - [AJs vs JTs: preflop equity](https://georgelipoker.com/equity/ajs-vs-jts.md) - [AJs vs A2s: preflop equity](https://georgelipoker.com/equity/ajs-vs-a2s.md) - [AKo vs Q9s: preflop equity](https://georgelipoker.com/equity/ako-vs-q9s.md)