--- title: "J9s vs T9s: preflop equity" url: "https://georgelipoker.com/equity/j9s-vs-t9s.md" canonical_url: "https://georgelipoker.com/equity/j9s-vs-t9s" last_updated: "2026-10-23" type: "reference" summary: "J9s is a big favorite over T9s before the flop: 69.56% to 30.44% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/j9s-vs-33.md", "https://georgelipoker.com/equity/j9s-vs-t8s.md", "https://georgelipoker.com/equity/jto-vs-t9s.md"] --- # J9s vs T9s: preflop equity J9s is a big favorite over T9s before the flop: 69.56% to 30.44% equity, counted exactly over every board, with the split by flop type and suit. In equity, J9s against T9s stands at 69.56% to 30.44%, a gap of 39.12 points. ## J9s against T9s: the numbers **Exact preflop results for J9s against T9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | J9s | 67.136 | 4.846 | 28.018 | 69.559 | | T9s | 28.018 | 4.846 | 67.136 | 30.441 | Each side holds one of the suited hands: J9s and 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. That is a clear edge, 69.56% to 30.44%, but T9s still wins often enough that one hand proves nothing. A split pot comes up on 4.85% of boards, so the wins and the equity differ by half of that. The hand ranking puts J9s at 55 and T9s at 64 out of 169 starting hands. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | J9s | 13,795,000 | 996,000 | 5,757,000 | | T9s | 5,757,000 | 996,000 | 13,795,000 | The board total is exact, 12 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **J9s 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) | | --- | --- | --- | --- | --- | | J9s | 2.285 | 1.490 | 3.569 | 0.438 | | T9s | 0.438 | 3.569 | 1.490 | 2.285 | 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 Low rainbow flops (nine high or lower) are the best for J9s (77.53%); monotone flops are the worst (62.96%). J9s stays ahead on all five textures. **J9s against T9s by flop texture, in percent** | Flop | Share of flops | J9s wins | Ties | T9s wins | J9s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 67.615 | 4.319 | 28.066 | 69.775 | | Rainbow, nine or lower | 6.314 | 76.154 | 2.747 | 21.099 | 77.527 | | Two-tone | 46.543 | 66.704 | 3.693 | 29.603 | 68.551 | | Monotone | 5.215 | 59.982 | 5.945 | 34.073 | 62.955 | | Paired | 17.333 | 66.481 | 9.127 | 24.392 | 71.044 | 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 Start from the random-hand figures, 55.66% for J9s and 54.03% for T9s. This opponent changes them by +13.90 and -23.59 points. **J9s 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 | | --- | --- | --- | --- | --- | | J9s, all flops | 69.559 | 55.662 | +13.897 | 1.24967 | | J9s, rainbow, ten or higher | 69.775 | 55.662 | +14.113 | 1.25355 | | J9s, rainbow, nine or lower | 77.527 | 55.662 | +21.865 | 1.39282 | | J9s, two-tone | 68.551 | 55.662 | +12.889 | 1.23156 | | J9s, monotone | 62.955 | 55.662 | +7.293 | 1.13102 | | J9s, paired | 71.044 | 55.662 | +15.382 | 1.27635 | | T9s, all flops | 30.441 | 54.028 | -23.587 | 0.56343 | | T9s, rainbow, ten or higher | 30.225 | 54.028 | -23.803 | 0.55943 | | T9s, rainbow, nine or lower | 22.473 | 54.028 | -31.555 | 0.41595 | | T9s, two-tone | 31.449 | 54.028 | -22.579 | 0.58209 | | T9s, monotone | 37.045 | 54.028 | -16.983 | 0.68566 | | T9s, paired | 28.956 | 54.028 | -25.072 | 0.53594 | ## Does a shared suit matter? There is no shared-suit case for this pair, since the cards they would need are already in the other hand. Every deal is a no-shared-suit deal. **J9s against T9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | J9s wins | Ties | T9s wins | J9s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 67.136 | 4.846 | 28.018 | 69.559 | ## How often this matchup comes up The class pair covers 12 combinations of specific cards in a fixed seat order, 0.0007% of 1,624,350, and 24 (0.0015%) in either order. ## A worked example With $100 from each side, the $200 pot is split on average as $139.12 for J9s and $60.88 for T9s; the first side gains $39.12 per all-in and the second gives up $39.12. Per 1,000 deals: J9s wins about 671, T9s wins about 280, and about 49 end in a split pot. ## The same matchup from the other side Swap the hands and you get T9s with 30.44% against J9s with 69.56%. We keep one page per matchup, with the better-ranked hand first. ## Keep exploring Open the calculator with Js9s 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 Js9s against Th9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=Js9s&p2=Th9h) - [J9s combos](https://georgelipoker.com/combos/j9s.md) - [T9s combos](https://georgelipoker.com/combos/t9s.md) - [J9s vs 33](https://georgelipoker.com/equity/j9s-vs-33.md) - [J9s vs T8s](https://georgelipoker.com/equity/j9s-vs-t8s.md) - [JTo vs T9s](https://georgelipoker.com/equity/jto-vs-t9s.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 12 specific deals of J9s against T9s, 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 - [J9s vs 33: preflop equity](https://georgelipoker.com/equity/j9s-vs-33.md) - [J9s vs T8s: preflop equity](https://georgelipoker.com/equity/j9s-vs-t8s.md) - [JTo vs T9s: preflop equity](https://georgelipoker.com/equity/jto-vs-t9s.md)