--- title: "A9o vs 43s: preflop equity" url: "https://georgelipoker.com/equity/a9o-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/a9o-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "A9o is a big favorite over 43s before the flop: 60.54% to 39.46% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kjo-vs-43s.md", "https://georgelipoker.com/equity/a9o-vs-53s.md", "https://georgelipoker.com/equity/a7s-vs-43s.md"] --- # A9o vs 43s: preflop equity A9o is a big favorite over 43s before the flop: 60.54% to 39.46% equity, counted exactly over every board, with the split by flop type and suit. Over all 1,712,304 boards that can follow this deal, A9o finishes with 60.54% of the pot and 43s with 39.46%. ## A9o against 43s: the numbers **Exact preflop results for A9o against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A9o | 60.283 | 0.521 | 39.196 | 60.543 | | 43s | 39.196 | 0.521 | 60.283 | 39.457 | One side is an offsuit hand, the other is a suited hand. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits. That is a modest edge, the kind that shows up over many hands and is easy to miss in one. Ties are part of the picture: 0.52% of boards end in a split pot, and each side counts that as half a win. In the ranking of all 169 starting hands, A9o is number 25 and 43s is number 150. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A9o | 49,547,000 | 428,000 | 32,215,000 | | 43s | 32,215,000 | 428,000 | 49,547,000 | The board total is exact, 48 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **A9o against 43s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | A9o | 1.534 | 1.659 | 2.551 | 0.652 | | 43s | 0.652 | 2.551 | 1.659 | 1.534 | 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 By flop texture, A9o's equity runs from 48.12% on low rainbow flops (nine high or lower) up to 64.68% on rainbow flops topped by a ten or better. On low rainbow flops (nine high or lower) the numbers flip and 43s is the one ahead. **A9o against 43s by flop texture, in percent** | Flop | Share of flops | A9o wins | Ties | 43s wins | A9o equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.341 | 64.557 | 0.243 | 35.200 | 64.678 | | Rainbow, nine or lower | 5.689 | 47.665 | 0.910 | 51.425 | 48.120 | | Two-tone | 46.667 | 58.615 | 0.338 | 41.047 | 58.784 | | Monotone | 5.212 | 57.337 | 2.552 | 40.111 | 58.613 | | Paired | 17.091 | 63.598 | 0.682 | 35.720 | 63.939 | 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 A random hand would give A9o 60.77% and 43s 38.64%. Against each other the change is -0.23 points for A9o and +0.82 for 43s. **A9o and 43s 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 | | --- | --- | --- | --- | --- | | A9o, all flops | 60.543 | 60.773 | -0.230 | 0.99622 | | A9o, rainbow, ten or higher | 64.678 | 60.773 | +3.905 | 1.06426 | | A9o, rainbow, nine or lower | 48.120 | 60.773 | -12.653 | 0.79180 | | A9o, two-tone | 58.784 | 60.773 | -1.989 | 0.96727 | | A9o, monotone | 58.613 | 60.773 | -2.160 | 0.96446 | | A9o, paired | 63.939 | 60.773 | +3.166 | 1.05210 | | 43s, all flops | 39.457 | 38.642 | +0.815 | 1.02109 | | 43s, rainbow, ten or higher | 35.322 | 38.642 | -3.320 | 0.91408 | | 43s, rainbow, nine or lower | 51.880 | 38.642 | +13.238 | 1.34258 | | 43s, two-tone | 41.216 | 38.642 | +2.574 | 1.06661 | | 43s, monotone | 41.387 | 38.642 | +2.745 | 1.07104 | | 43s, paired | 36.061 | 38.642 | -2.581 | 0.93321 | ## Does a shared suit matter? When the hands share a suit, A9o holds 61.24%; when they do not, it holds 59.85%. A9o does better with a shared suit, by 1.39 points. **A9o against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | A9o wins | Ties | 43s wins | A9o equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 60.962 | 0.558 | 38.480 | 61.241 | | No shared suit | 24 | 50.00 | 59.603 | 0.484 | 39.913 | 59.845 | ## How often this matchup comes up This page stands for 48 specific-card matchups (0.0030% of 1,624,350 ordered deals), or 96 once you count the seats both ways (0.0059%). ## A worked example To see what the equity is worth, imagine $100 each in a $200 pot. A9o is worth $121.08 on average (+$21.08); 43s is worth $78.92 (-$21.08). Run 1,000 deals and the tally comes out near 603 for A9o, 392 for 43s and 5 ties. ## The same matchup from the other side Read it from the other side: 43s against A9o is the same matchup with the numbers swapped, so 43s holds 39.46% and A9o holds 60.54%. That address sends you back to this page. ## Keep exploring Try As9h against 4d3d 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 As9h against 4d3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As9h&p2=4d3d) - [A9o combos](https://georgelipoker.com/combos/a9o.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [KJo vs 43s](https://georgelipoker.com/equity/kjo-vs-43s.md) - [A9o vs 53s](https://georgelipoker.com/equity/a9o-vs-53s.md) - [A7s vs 43s](https://georgelipoker.com/equity/a7s-vs-43s.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 48 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 - [KJo vs 43s: preflop equity](https://georgelipoker.com/equity/kjo-vs-43s.md) - [A9o vs 53s: preflop equity](https://georgelipoker.com/equity/a9o-vs-53s.md) - [A7s vs 43s: preflop equity](https://georgelipoker.com/equity/a7s-vs-43s.md)