--- title: "K9o vs T9s: preflop equity" url: "https://georgelipoker.com/equity/k9o-vs-t9s.md" canonical_url: "https://georgelipoker.com/equity/k9o-vs-t9s" last_updated: "2026-10-23" type: "reference" summary: "K9o is a big favorite over T9s before the flop: 66.59% to 33.42% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/k9o-vs-33.md", "https://georgelipoker.com/equity/k9o-vs-t8s.md", "https://georgelipoker.com/equity/q9s-vs-t9s.md"] --- # K9o vs T9s: preflop equity K9o is a big favorite over T9s before the flop: 66.59% to 33.42% equity, counted exactly over every board, with the split by flop type and suit. If K9o and T9s get all the chips in before the flop, K9o owns 66.59% of the pot in the long run and T9s owns 33.41%. ## K9o against T9s: the numbers **Exact preflop results for K9o against T9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | K9o | 65.201 | 2.768 | 32.031 | 66.585 | | T9s | 32.031 | 2.768 | 65.201 | 33.415 | Here an offsuit hand (K9o) meets a suited hand (T9s). Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up. A lead of 33.18 points is large but not decisive: T9s still takes about 320 of every 1,000 deals. Ties are part of the picture: 2.77% of boards end in a split pot, and each side counts that as half a win. Among the 169 starting hands, K9o is number 40 and T9s is number 64 by strength against a random hand. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | K9o | 40,192,000 | 1,706,000 | 19,745,000 | | T9s | 19,745,000 | 1,706,000 | 40,192,000 | The total is exact: 36 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. **K9o 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) | | --- | --- | --- | --- | --- | | K9o | 1.993 | 1.534 | 3.122 | 0.502 | | T9s | 0.502 | 3.122 | 1.534 | 1.993 | 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 The flop changes the picture. K9o does best on low rainbow flops (nine high or lower), at 74.80%, and worst on monotone flops, at 62.76%. K9o stays ahead on all five textures. **K9o against T9s by flop texture, in percent** | Flop | Share of flops | K9o wins | Ties | T9s wins | K9o equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.634 | 64.943 | 2.387 | 32.670 | 66.137 | | Rainbow, nine or lower | 6.314 | 73.597 | 2.402 | 24.001 | 74.798 | | Two-tone | 46.527 | 63.558 | 2.265 | 34.177 | 64.691 | | Monotone | 5.192 | 60.890 | 3.730 | 35.380 | 62.755 | | Paired | 17.333 | 68.211 | 4.505 | 27.284 | 70.463 | 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 Each hand has a baseline against a random hand: 57.81% for K9o, 54.03% for T9s. Here the change is +8.78 and -20.62 points. **K9o 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 | | --- | --- | --- | --- | --- | | K9o, all flops | 66.585 | 57.812 | +8.773 | 1.15175 | | K9o, rainbow, ten or higher | 66.137 | 57.812 | +8.325 | 1.14400 | | K9o, rainbow, nine or lower | 74.798 | 57.812 | +16.986 | 1.29381 | | K9o, two-tone | 64.691 | 57.812 | +6.879 | 1.11899 | | K9o, monotone | 62.755 | 57.812 | +4.943 | 1.08550 | | K9o, paired | 70.463 | 57.812 | +12.651 | 1.21883 | | T9s, all flops | 33.415 | 54.028 | -20.613 | 0.61848 | | T9s, rainbow, ten or higher | 33.863 | 54.028 | -20.165 | 0.62677 | | T9s, rainbow, nine or lower | 25.202 | 54.028 | -28.826 | 0.46646 | | T9s, two-tone | 35.309 | 54.028 | -18.719 | 0.65353 | | T9s, monotone | 37.245 | 54.028 | -16.783 | 0.68936 | | T9s, paired | 29.537 | 54.028 | -24.491 | 0.54670 | ## Does a shared suit matter? The suit split reads 67.58% for K9o with a shared suit and 66.09% without one. K9o does better with a shared suit, by 1.49 points. **K9o against T9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | K9o wins | Ties | T9s wins | K9o equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 66.153 | 2.849 | 30.998 | 67.577 | | No shared suit | 24 | 66.67 | 64.725 | 2.728 | 32.547 | 66.089 | ## How often this matchup comes up The class pair covers 36 combinations of specific cards in a fixed seat order, 0.0022% of 1,624,350, and 72 (0.0044%) in either order. ## A worked example Worked example: both players commit $100, so $200 sits in the middle. Over every board, K9o's average share is $133.18 (a gain of $33.18) and T9s' is $66.82 (a loss of $33.18). Scaled to 1,000 deals, that is roughly 652 wins for K9o, 320 for T9s and 28 chopped pots. ## The same matchup from the other side T9s versus K9o is this same page seen from the other hand: 33.41% for T9s, 66.59% for K9o. ## Keep exploring Try Ks9h against Td9d 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 Ks9h against Td9d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=Ks9h&p2=Td9d) - [K9o combos](https://georgelipoker.com/combos/k9o.md) - [T9s combos](https://georgelipoker.com/combos/t9s.md) - [K9o vs 33](https://georgelipoker.com/equity/k9o-vs-33.md) - [K9o vs T8s](https://georgelipoker.com/equity/k9o-vs-t8s.md) - [Q9s vs T9s](https://georgelipoker.com/equity/q9s-vs-t9s.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 36 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 - [K9o vs 33: preflop equity](https://georgelipoker.com/equity/k9o-vs-33.md) - [K9o vs T8s: preflop equity](https://georgelipoker.com/equity/k9o-vs-t8s.md) - [Q9s vs T9s: preflop equity](https://georgelipoker.com/equity/q9s-vs-t9s.md)