--- title: "A9o vs T8s: preflop equity" url: "https://georgelipoker.com/equity/a9o-vs-t8s.md" canonical_url: "https://georgelipoker.com/equity/a9o-vs-t8s" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, A9o or T8s? A9o leads 56.93% to 43.07% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/a9o-vs-t9o.md", "https://georgelipoker.com/equity/a9o-vs-98s.md", "https://georgelipoker.com/equity/kjo-vs-t8s.md"] --- # A9o vs T8s: preflop equity Who is ahead, A9o or T8s? A9o leads 56.93% to 43.07% before the flop, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, A9o takes 56.93% of the pot on average and T8s takes the other 43.07%. ## A9o against T8s: the numbers **Exact preflop results for A9o against T8s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A9o | 56.721 | 0.417 | 42.862 | 56.930 | | T8s | 42.862 | 0.417 | 56.721 | 43.070 | The first hand is an offsuit hand; the second is a suited hand. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other. The lead is steady rather than large, and the flop still has plenty of say in who wins. Of every 100 boards, about 0.42 are split pots, and the equity figures already include them. In the ranking of all 169 starting hands, A9o is number 25 and T8s is number 73. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A9o | 46,619,000 | 343,000 | 35,229,000 | | T8s | 35,229,000 | 343,000 | 46,619,000 | 48 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. **A9o against T8s 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 | 1.322 | 1.763 | 2.333 | 0.757 | | T8s | 0.757 | 2.333 | 1.763 | 1.322 | 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 Across the five flop textures A9o's equity moves by 6.87 points, from 54.67% on monotone flops to 61.54% on paired flops. A9o stays ahead on all five textures. **A9o against T8s by flop texture, in percent** | Flop | Share of flops | A9o wins | Ties | T8s wins | A9o equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.665 | 57.700 | 0.180 | 42.120 | 57.790 | | Rainbow, nine or lower | 6.365 | 57.102 | 0.511 | 42.387 | 57.357 | | Two-tone | 46.667 | 54.864 | 0.233 | 44.903 | 54.980 | | Monotone | 5.212 | 53.498 | 2.350 | 44.152 | 54.673 | | Paired | 17.091 | 61.222 | 0.637 | 38.141 | 61.540 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 60.77%, A9o changes by -3.84 points, and T8s, from 52.33%, by -9.26. **A9o and T8s 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 | 56.930 | 60.773 | -3.843 | 0.93676 | | A9o, rainbow, ten or higher | 57.790 | 60.773 | -2.983 | 0.95092 | | A9o, rainbow, nine or lower | 57.357 | 60.773 | -3.416 | 0.94379 | | A9o, two-tone | 54.980 | 60.773 | -5.793 | 0.90468 | | A9o, monotone | 54.673 | 60.773 | -6.100 | 0.89963 | | A9o, paired | 61.540 | 60.773 | +0.767 | 1.01262 | | T8s, all flops | 43.070 | 52.334 | -9.264 | 0.82298 | | T8s, rainbow, ten or higher | 42.210 | 52.334 | -10.124 | 0.80655 | | T8s, rainbow, nine or lower | 42.643 | 52.334 | -9.691 | 0.81482 | | T8s, two-tone | 45.020 | 52.334 | -7.314 | 0.86024 | | T8s, monotone | 45.327 | 52.334 | -7.007 | 0.86611 | | T8s, paired | 38.460 | 52.334 | -13.874 | 0.73490 | ## Does a shared suit matter? The suit split reads 57.42% for A9o with a shared suit and 56.44% without one. A9o does better with a shared suit, by 0.98 points. **A9o against T8s by suit overlap, in percent** | Deals | Specific deals | Share of deals | A9o wins | Ties | T8s wins | A9o equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 57.187 | 0.457 | 42.356 | 57.415 | | No shared suit | 24 | 50.00 | 56.256 | 0.376 | 43.368 | 56.444 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 48 are A9o in one seat and T8s in the other (0.0030%); with the seats swapped too, 96 (0.0059%). ## A worked example Try it with money: two players each put in $100 and the whole board runs out every possible way. A9o averages $113.86 from the $200, up $13.86; T8s averages $86.14, down $13.86. Run 1,000 deals and the tally comes out near 567 for A9o, 429 for T8s and 4 ties. ## The same matchup from the other side The reversed view, T8s against A9o, shows 43.07% for T8s and 56.93% for A9o. It is the same count, so it redirects here. ## Keep exploring The calculator link fills in As9h against Td8d, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength. - [Open As9h against Td8d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As9h&p2=Td8d) - [A9o combos](https://georgelipoker.com/combos/a9o.md) - [T8s combos](https://georgelipoker.com/combos/t8s.md) - [A9o vs T9o](https://georgelipoker.com/equity/a9o-vs-t9o.md) - [A9o vs 98s](https://georgelipoker.com/equity/a9o-vs-98s.md) - [KJo vs T8s](https://georgelipoker.com/equity/kjo-vs-t8s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Method: exact enumeration. The 48 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [A9o vs T9o: preflop equity](https://georgelipoker.com/equity/a9o-vs-t9o.md) - [A9o vs 98s: preflop equity](https://georgelipoker.com/equity/a9o-vs-98s.md) - [KJo vs T8s: preflop equity](https://georgelipoker.com/equity/kjo-vs-t8s.md)