--- title: "TT vs A9o: preflop equity" url: "https://georgelipoker.com/equity/tt-vs-a9o.md" canonical_url: "https://georgelipoker.com/equity/tt-vs-a9o" last_updated: "2026-10-23" type: "reference" summary: "TT is a big favorite over A9o before the flop: 72.19% to 27.81% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/tt-vs-kjo.md", "https://georgelipoker.com/equity/tt-vs-55.md", "https://georgelipoker.com/equity/99-vs-a9o.md"] --- # TT vs A9o: preflop equity TT is a big favorite over A9o before the flop: 72.19% to 27.81% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, TT is ahead of A9o by 44.38 points of equity, 72.19% to 27.81%. ## TT against A9o: the numbers **Exact preflop results for TT against A9o, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | TT | 72.007 | 0.359 | 27.634 | 72.187 | | A9o | 27.634 | 0.359 | 72.007 | 27.813 | Here a pocket pair (TT) meets an offsuit hand (A9o). The pair is ahead of one card and behind the other, so the board decides how that plays out. A lead of 44.38 points is large but not decisive: A9o still takes about 276 of every 1,000 deals. The tie share is 0.36%: on those boards the pot is chopped and neither hand wins outright. Ranked by equity against a random hand, TT is number 5 of the 169 starting hands and A9o is number 25. **Boards behind the percentages: 123,285,888 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | TT | 88,774,000 | 443,000 | 34,069,000 | | A9o | 34,069,000 | 443,000 | 88,774,000 | Exact total: 72 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. **TT against A9o read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | TT | 2.595 | 1.389 | 3.619 | 0.385 | | A9o | 0.385 | 3.619 | 1.389 | 2.595 | The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity. ## Who is ahead on which flops If you know the kind of flop that came, the numbers shift: TT holds 81.09% on low rainbow flops (nine high or lower) and 67.51% on monotone flops. TT stays ahead on all five textures. **TT against A9o by flop texture, in percent** | Flop | Share of flops | TT wins | Ties | A9o wins | TT equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.988 | 69.641 | 0.165 | 30.194 | 69.724 | | Rainbow, nine or lower | 7.042 | 80.694 | 0.792 | 18.514 | 81.090 | | Two-tone | 46.485 | 71.618 | 0.295 | 28.087 | 71.766 | | Monotone | 5.151 | 66.667 | 1.688 | 31.645 | 67.511 | | Paired | 17.334 | 74.382 | 0.228 | 25.390 | 74.496 | 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 How much does the opponent matter? Compared with its random-hand 75.01%, TT changes by -2.82 points, and A9o, from 60.77%, by -32.96. **TT and A9o 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 | | --- | --- | --- | --- | --- | | TT, all flops | 72.187 | 75.012 | -2.825 | 0.96234 | | TT, rainbow, ten or higher | 69.724 | 75.012 | -5.288 | 0.92950 | | TT, rainbow, nine or lower | 81.090 | 75.012 | +6.078 | 1.08103 | | TT, two-tone | 71.766 | 75.012 | -3.246 | 0.95673 | | TT, monotone | 67.511 | 75.012 | -7.501 | 0.90000 | | TT, paired | 74.496 | 75.012 | -0.516 | 0.99312 | | A9o, all flops | 27.813 | 60.773 | -32.960 | 0.45765 | | A9o, rainbow, ten or higher | 30.276 | 60.773 | -30.497 | 0.49818 | | A9o, rainbow, nine or lower | 18.910 | 60.773 | -41.863 | 0.31116 | | A9o, two-tone | 28.234 | 60.773 | -32.539 | 0.46458 | | A9o, monotone | 32.489 | 60.773 | -28.284 | 0.53460 | | A9o, paired | 25.504 | 60.773 | -35.269 | 0.41966 | ## Does a shared suit matter? Two kinds of deal exist here. In 60 of them the hands share a suit and TT holds 72.23%. In 12 they do not, and it holds 71.99%. The two rows differ by only 0.24 points, so suits barely change this matchup. **TT against A9o by suit overlap, in percent** | Deals | Specific deals | Share of deals | TT wins | Ties | A9o wins | TT equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 60 | 83.33 | 72.038 | 0.375 | 27.587 | 72.226 | | No shared suit | 12 | 16.67 | 71.850 | 0.280 | 27.870 | 71.990 | ## How often this matchup comes up Counting specific cards, TT against A9o appears in 72 of the 1,624,350 ordered heads-up deals (0.0044%), and in 144 when the seats are swapped too (0.0089%). ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says TT gets $144.38 of it on average and A9o gets $55.62. Over a long run, 1,000 deals split into about 720 for TT, 276 for A9o and 4 tied. ## The same matchup from the other side The mirror image, A9o against TT, is 27.81% to 72.19%, and its address redirects to this page. ## Keep exploring TsTh against Ad9c is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open TsTh against Ad9c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=TsTh&p2=Ad9c) - [TT combos](https://georgelipoker.com/combos/tt.md) - [A9o combos](https://georgelipoker.com/combos/a9o.md) - [TT vs KJo](https://georgelipoker.com/equity/tt-vs-kjo.md) - [TT vs 55](https://georgelipoker.com/equity/tt-vs-55.md) - [99 vs A9o](https://georgelipoker.com/equity/99-vs-a9o.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 72 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [TT vs KJo: preflop equity](https://georgelipoker.com/equity/tt-vs-kjo.md) - [TT vs 55: preflop equity](https://georgelipoker.com/equity/tt-vs-55.md) - [99 vs A9o: preflop equity](https://georgelipoker.com/equity/99-vs-a9o.md)