--- title: "A2s vs T9s: preflop equity" url: "https://georgelipoker.com/equity/a2s-vs-t9s.md" canonical_url: "https://georgelipoker.com/equity/a2s-vs-t9s" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, A2s or T9s? A2s leads 54.56% to 45.44% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/a2s-vs-33.md", "https://georgelipoker.com/equity/a2s-vs-t8s.md", "https://georgelipoker.com/equity/qto-vs-t9s.md"] --- # A2s vs T9s: preflop equity Who is ahead, A2s or T9s? A2s leads 54.56% to 45.44% before the flop, counted exactly over every board, with the split by flop type and suit. The exact count puts A2s at 54.56% and T9s at 45.44% when the two hands see all five board cards. ## A2s against T9s: the numbers **Exact preflop results for A2s against T9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A2s | 54.304 | 0.518 | 45.178 | 54.563 | | T9s | 45.178 | 0.518 | 54.304 | 45.437 | The matchup is suited hands on both sides, A2s against T9s. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits. With only 9.12 points between them, the board decides this matchup far more than the cards in hand. Ties are 0.52% of the outcomes here; each tied board gives both hands half the pot. Ranked by equity against a random hand, A2s is number 46 of the 169 starting hands and T9s is number 64. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A2s | 14,878,000 | 142,000 | 12,377,000 | | T9s | 12,377,000 | 142,000 | 14,878,000 | 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. **A2s against T9s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | A2s | 1.201 | 1.841 | 2.213 | 0.833 | | T9s | 0.833 | 2.213 | 1.841 | 1.201 | 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 Paired flops are the best for A2s (60.44%); low rainbow flops (nine high or lower) are the worst (51.20%). A2s stays ahead on all five textures. **A2s against T9s by flop texture, in percent** | Flop | Share of flops | A2s wins | Ties | T9s wins | A2s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.543 | 53.933 | 0.193 | 45.874 | 54.030 | | Rainbow, nine or lower | 6.366 | 50.834 | 0.739 | 48.427 | 51.204 | | Two-tone | 46.727 | 53.218 | 0.277 | 46.505 | 53.356 | | Monotone | 5.273 | 51.031 | 3.434 | 45.535 | 52.748 | | Paired | 17.091 | 60.107 | 0.661 | 39.232 | 60.438 | Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank. ## Compared with a random hand Start from the random-hand figures, 57.38% for A2s and 54.03% for T9s. This opponent changes them by -2.82 and -8.59 points. **A2s and T9s 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 | | --- | --- | --- | --- | --- | | A2s, all flops | 54.563 | 57.379 | -2.816 | 0.95092 | | A2s, rainbow, ten or higher | 54.030 | 57.379 | -3.349 | 0.94163 | | A2s, rainbow, nine or lower | 51.204 | 57.379 | -6.175 | 0.89238 | | A2s, two-tone | 53.356 | 57.379 | -4.023 | 0.92989 | | A2s, monotone | 52.748 | 57.379 | -4.631 | 0.91929 | | A2s, paired | 60.438 | 57.379 | +3.059 | 1.05331 | | T9s, all flops | 45.437 | 54.028 | -8.591 | 0.84099 | | T9s, rainbow, ten or higher | 45.970 | 54.028 | -8.058 | 0.85086 | | T9s, rainbow, nine or lower | 48.796 | 54.028 | -5.232 | 0.90316 | | T9s, two-tone | 46.644 | 54.028 | -7.384 | 0.86333 | | T9s, monotone | 47.252 | 54.028 | -6.776 | 0.87458 | | T9s, paired | 39.562 | 54.028 | -14.466 | 0.73225 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, A2s has 56.12%; looking only at deals where they do not, 54.04%. A2s does better with a shared suit, by 2.08 points. **A2s against T9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | A2s wins | Ties | T9s wins | A2s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 55.823 | 0.599 | 43.578 | 56.123 | | No shared suit | 12 | 75.00 | 53.798 | 0.490 | 45.712 | 54.043 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 16 are A2s in one seat and T9s in the other (0.0010%); with the seats swapped too, 32 (0.0020%). ## A worked example Take a $200 pot built from $100 each. A2s' equity of 54.56% is worth $109.12, a $9.12 edge, and T9s' 45.44% is worth $90.88, which is $9.12 under its stake. Per 1,000 deals: A2s wins about 543, T9s wins about 452, and about 5 end in a split pot. ## The same matchup from the other side Read it from the other side: T9s against A2s is the same matchup with the numbers swapped, so T9s holds 45.44% and A2s holds 54.56%. That address sends you back to this page. ## Keep exploring Open the calculator with As2s against Th9h 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 As2s against Th9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As2s&p2=Th9h) - [A2s combos](https://georgelipoker.com/combos/a2s.md) - [T9s combos](https://georgelipoker.com/combos/t9s.md) - [A2s vs 33](https://georgelipoker.com/equity/a2s-vs-33.md) - [A2s vs T8s](https://georgelipoker.com/equity/a2s-vs-t8s.md) - [QTo vs T9s](https://georgelipoker.com/equity/qto-vs-t9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 16 specific A2s against T9s 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 - [A2s vs 33: preflop equity](https://georgelipoker.com/equity/a2s-vs-33.md) - [A2s vs T8s: preflop equity](https://georgelipoker.com/equity/a2s-vs-t8s.md) - [QTo vs T9s: preflop equity](https://georgelipoker.com/equity/qto-vs-t9s.md)