--- title: "99 vs T9o: preflop equity" url: "https://georgelipoker.com/equity/99-vs-t9o.md" canonical_url: "https://georgelipoker.com/equity/99-vs-t9o" last_updated: "2026-10-23" type: "reference" summary: "99 is a big favorite over T9o before the flop: 64.72% to 35.28% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/99-vs-98s.md", "https://georgelipoker.com/equity/99-vs-22.md", "https://georgelipoker.com/equity/88-vs-t9o.md"] --- # 99 vs T9o: preflop equity 99 is a big favorite over T9o before the flop: 64.72% to 35.28% equity, counted exactly over every board, with the split by flop type and suit. In equity, 99 against T9o stands at 64.72% to 35.28%, a gap of 29.44 points. ## 99 against T9o: the numbers **Exact preflop results for 99 against T9o, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | 99 | 63.735 | 1.962 | 34.303 | 64.716 | | T9o | 34.303 | 1.962 | 63.735 | 35.284 | 99 and T9o are a pocket pair and an offsuit hand, in that order. The pair already holds one of the other hand's ranks, and that overlap cuts down the cards the other hand can pair with. 99 is ahead, but T9o is far from dead: it takes 343 of every 1,000 deals outright. Ties are 1.96% of the outcomes here; each tied board gives both hands half the pot. By strength against a random hand, 99 holds place 6 of 169 and T9o holds place 78. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | 99 | 39,288,000 | 1,209,000 | 21,145,000 | | T9o | 21,145,000 | 1,209,000 | 39,288,000 | Exact total: 36 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. **99 against T9o read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | 99 | 1.834 | 1.569 | 2.915 | 0.545 | | T9o | 0.545 | 2.915 | 1.569 | 1.834 | 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 By flop texture, 99's equity runs from 58.75% on monotone flops up to 78.32% on low rainbow flops (nine high or lower). 99 stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **99 against T9o by flop texture, in percent** | Flop | Share of flops | 99 wins | Ties | T9o wins | 99 equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.239 | 59.510 | 2.209 | 38.281 | 60.615 | | Rainbow, nine or lower | 5.585 | 77.425 | 1.799 | 20.776 | 78.324 | | Two-tone | 46.215 | 62.203 | 2.040 | 35.757 | 63.223 | | Monotone | 5.130 | 57.540 | 2.419 | 40.041 | 58.750 | | Paired | 17.831 | 71.181 | 1.327 | 27.492 | 71.845 | 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 The table below sets each hand against its own random-hand baseline: a change of -7.34 points for 99, from 72.06%, and -16.25 for T9o, from 51.53%. **99 and T9o 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 | | --- | --- | --- | --- | --- | | 99, all flops | 64.716 | 72.057 | -7.341 | 0.89812 | | 99, rainbow, ten or higher | 60.615 | 72.057 | -11.442 | 0.84121 | | 99, rainbow, nine or lower | 78.324 | 72.057 | +6.267 | 1.08697 | | 99, two-tone | 63.223 | 72.057 | -8.834 | 0.87740 | | 99, monotone | 58.750 | 72.057 | -13.307 | 0.81533 | | 99, paired | 71.845 | 72.057 | -0.212 | 0.99706 | | T9o, all flops | 35.284 | 51.532 | -16.248 | 0.68470 | | T9o, rainbow, ten or higher | 39.385 | 51.532 | -12.147 | 0.76428 | | T9o, rainbow, nine or lower | 21.676 | 51.532 | -29.856 | 0.42063 | | T9o, two-tone | 36.777 | 51.532 | -14.755 | 0.71367 | | T9o, monotone | 41.250 | 51.532 | -10.282 | 0.80047 | | T9o, paired | 28.155 | 51.532 | -23.377 | 0.54636 | ## Does a shared suit matter? When the hands share a suit, 99 holds 64.63%; when they do not, it holds 64.89%. 99 does better with no shared suit, by 0.26 points. **99 against T9o by suit overlap, in percent** | Deals | Specific deals | Share of deals | 99 wins | Ties | T9o wins | 99 equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 66.67 | 63.632 | 1.996 | 34.372 | 64.630 | | No shared suit | 12 | 33.33 | 63.941 | 1.892 | 34.167 | 64.887 | ## How often this matchup comes up Counting specific cards, 99 against T9o appears in 36 of the 1,624,350 ordered heads-up deals (0.0022%), and in 72 when the seats are swapped too (0.0044%). ## A worked example Put $100 each into a $200 pot and deal every board once: 99 averages $129.44 back, ahead of its $100 by $29.44, while T9o averages $70.56, short of its $100 by $29.44. Over a long run, 1,000 deals split into about 637 for 99, 343 for T9o and 20 tied. ## The same matchup from the other side T9o versus 99 is this same page seen from the other hand: 35.28% for T9o, 64.72% for 99. ## Keep exploring Open the calculator with 9s9h against Td9c 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 9s9h against Td9c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=9s9h&p2=Td9c) - [99 combos](https://georgelipoker.com/combos/99.md) - [T9o combos](https://georgelipoker.com/combos/t9o.md) - [99 vs 98s](https://georgelipoker.com/equity/99-vs-98s.md) - [99 vs 22](https://georgelipoker.com/equity/99-vs-22.md) - [88 vs T9o](https://georgelipoker.com/equity/88-vs-t9o.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed All 1,712,304 five-card boards are dealt for every suit pattern among the 36 specific deals of 99 against T9o, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [99 vs 98s: preflop equity](https://georgelipoker.com/equity/99-vs-98s.md) - [99 vs 22: preflop equity](https://georgelipoker.com/equity/99-vs-22.md) - [88 vs T9o: preflop equity](https://georgelipoker.com/equity/88-vs-t9o.md)