--- title: "JTs vs J9s: preflop equity" url: "https://georgelipoker.com/equity/jts-vs-j9s.md" canonical_url: "https://georgelipoker.com/equity/jts-vs-j9s" last_updated: "2026-10-23" type: "reference" summary: "JTs is a big favorite over J9s before the flop: 68.97% to 31.03% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/jts-vs-jto.md", "https://georgelipoker.com/equity/jts-vs-t9s.md", "https://georgelipoker.com/equity/a2s-vs-j9s.md"] --- # JTs vs J9s: preflop equity JTs is a big favorite over J9s before the flop: 68.97% to 31.03% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, JTs is ahead of J9s by 37.94 points of equity, 68.97% to 31.03%. ## JTs against J9s: the numbers **Exact preflop results for JTs against J9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JTs | 64.026 | 9.888 | 26.086 | 68.970 | | J9s | 26.086 | 9.888 | 64.026 | 31.030 | This is a contest between two suited hands, JTs and J9s. 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, 68.97% to 31.03%, but J9s still wins often enough that one hand proves nothing. A split pot comes up on 9.89% of boards, so the wins and the equity differ by half of that. The hand ranking puts JTs at 45 and J9s at 55 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 | | --- | --- | --- | --- | | JTs | 13,156,000 | 2,032,000 | 5,360,000 | | J9s | 5,360,000 | 2,032,000 | 13,156,000 | 12 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand. **JTs against J9s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | JTs | 2.223 | 1.562 | 3.833 | 0.450 | | J9s | 0.450 | 3.833 | 1.562 | 2.223 | 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 Across the five flop textures JTs' equity moves by 10.33 points, from 63.31% on monotone flops to 73.64% on rainbow flops topped by a ten or better. JTs stays ahead on all five textures. **JTs against J9s by flop texture, in percent** | Flop | Share of flops | JTs wins | Ties | J9s wins | JTs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 69.116 | 9.047 | 21.837 | 73.640 | | Rainbow, nine or lower | 7.042 | 63.979 | 2.996 | 33.025 | 65.477 | | Two-tone | 46.543 | 65.420 | 6.930 | 27.650 | 68.885 | | Monotone | 5.215 | 59.314 | 7.992 | 32.694 | 63.310 | | Paired | 17.333 | 54.712 | 22.355 | 22.933 | 65.890 | 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 Each hand has a baseline against a random hand: 57.53% for JTs, 55.66% for J9s. Here the change is +11.44 and -24.63 points. **JTs and J9s 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 | | --- | --- | --- | --- | --- | | JTs, all flops | 68.970 | 57.528 | +11.442 | 1.19889 | | JTs, rainbow, ten or higher | 73.640 | 57.528 | +16.112 | 1.28007 | | JTs, rainbow, nine or lower | 65.477 | 57.528 | +7.949 | 1.13818 | | JTs, two-tone | 68.885 | 57.528 | +11.357 | 1.19742 | | JTs, monotone | 63.310 | 57.528 | +5.782 | 1.10051 | | JTs, paired | 65.890 | 57.528 | +8.362 | 1.14536 | | J9s, all flops | 31.030 | 55.662 | -24.632 | 0.55747 | | J9s, rainbow, ten or higher | 26.360 | 55.662 | -29.302 | 0.47357 | | J9s, rainbow, nine or lower | 34.523 | 55.662 | -21.139 | 0.62023 | | J9s, two-tone | 31.115 | 55.662 | -24.547 | 0.55900 | | J9s, monotone | 36.690 | 55.662 | -18.972 | 0.65916 | | J9s, paired | 34.110 | 55.662 | -21.552 | 0.61281 | ## Does a shared suit matter? For this pair the shared-suit row is empty: the two hands cannot both own a card of one suit without reusing a card. **JTs against J9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JTs wins | Ties | J9s wins | JTs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 64.026 | 9.888 | 26.086 | 68.970 | ## How often this matchup comes up This page stands for 12 specific-card matchups (0.0007% of 1,624,350 ordered deals), or 24 once you count the seats both ways (0.0015%). ## A worked example With $100 from each side, the $200 pot is split on average as $137.94 for JTs and $62.06 for J9s; the first side gains $37.94 per all-in and the second gives up $37.94. A thousand deals look like this: JTs takes 640, J9s takes 261, 99 are ties. ## The same matchup from the other side The reversed view, J9s against JTs, shows 31.03% for J9s and 68.97% for JTs. It is the same count, so it redirects here. ## Keep exploring Open the calculator with JsTs against Jh9h 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 JsTs against Jh9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsTs&p2=Jh9h) - [JTs combos](https://georgelipoker.com/combos/jts.md) - [J9s combos](https://georgelipoker.com/combos/j9s.md) - [JTs vs JTo](https://georgelipoker.com/equity/jts-vs-jto.md) - [JTs vs T9s](https://georgelipoker.com/equity/jts-vs-t9s.md) - [A2s vs J9s](https://georgelipoker.com/equity/a2s-vs-j9s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 12 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [JTs vs JTo: preflop equity](https://georgelipoker.com/equity/jts-vs-jto.md) - [JTs vs T9s: preflop equity](https://georgelipoker.com/equity/jts-vs-t9s.md) - [A2s vs J9s: preflop equity](https://georgelipoker.com/equity/a2s-vs-j9s.md)