--- title: "J9s vs JTo: preflop equity" url: "https://georgelipoker.com/equity/j9s-vs-jto.md" canonical_url: "https://georgelipoker.com/equity/j9s-vs-jto" last_updated: "2026-10-23" type: "reference" summary: "JTo is a big favorite over J9s before the flop: 67.81% to 32.20% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/j9s-vs-t9s.md", "https://georgelipoker.com/equity/j9s-vs-33.md", "https://georgelipoker.com/equity/44-vs-jto.md"] --- # J9s vs JTo: preflop equity JTo is a big favorite over J9s before the flop: 67.81% to 32.20% equity, counted exactly over every board, with the split by flop type and suit. If JTo and J9s get all the chips in before the flop, JTo owns 67.80% of the pot in the long run and J9s owns 32.20%. ## J9s against JTo: the numbers **Exact preflop results for J9s against JTo, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | J9s | 26.999 | 10.391 | 62.610 | 32.195 | | JTo | 62.610 | 10.391 | 26.999 | 67.805 | J9s is a suited hand and JTo is an offsuit hand. The two hands share a rank, and the one with the better other card dominates: it wins most kicker battles when that shared rank hits. JTo is the clear favorite, though J9s gets there on roughly one board in 3. Ties are 10.39% of the outcomes here; each tied board gives both hands half the pot. Among the 169 starting hands, J9s is number 55 and JTo is number 57 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 | | --- | --- | --- | --- | | J9s | 16,643,000 | 6,405,000 | 38,595,000 | | JTo | 38,595,000 | 6,405,000 | 16,643,000 | 36 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. **J9s against JTo 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 | 0.475 | 3.704 | 1.597 | 2.106 | | JTo | 2.106 | 1.597 | 3.704 | 0.475 | In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity. ## Who is ahead on which flops Break the boards down by their first three cards and JTo is strongest on rainbow flops topped by a ten or better (73.00%) and weakest on monotone flops (63.43%). JTo stays ahead on all five textures. **J9s against JTo by flop texture, in percent** | Flop | Share of flops | J9s wins | Ties | JTo wins | J9s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.905 | 22.361 | 9.287 | 68.352 | 27.004 | | Rainbow, nine or lower | 7.042 | 34.117 | 3.092 | 62.791 | 35.663 | | Two-tone | 46.527 | 28.909 | 7.436 | 63.655 | 32.627 | | Monotone | 5.192 | 32.684 | 7.774 | 59.542 | 36.571 | | Paired | 17.334 | 23.675 | 23.596 | 52.729 | 35.473 | 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: 55.66% for J9s, 55.25% for JTo. Here the change is -23.46 and +12.55 points. **J9s and JTo 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 | 32.195 | 55.662 | -23.467 | 0.57840 | | J9s, rainbow, ten or higher | 27.004 | 55.662 | -28.658 | 0.48514 | | J9s, rainbow, nine or lower | 35.663 | 55.662 | -19.999 | 0.64071 | | J9s, two-tone | 32.627 | 55.662 | -23.035 | 0.58616 | | J9s, monotone | 36.571 | 55.662 | -19.091 | 0.65702 | | J9s, paired | 35.473 | 55.662 | -20.189 | 0.63729 | | JTo, all flops | 67.805 | 55.248 | +12.557 | 1.22728 | | JTo, rainbow, ten or higher | 72.996 | 55.248 | +17.748 | 1.32124 | | JTo, rainbow, nine or lower | 64.337 | 55.248 | +9.089 | 1.16451 | | JTo, two-tone | 67.373 | 55.248 | +12.125 | 1.21946 | | JTo, monotone | 63.429 | 55.248 | +8.181 | 1.14808 | | JTo, paired | 64.527 | 55.248 | +9.279 | 1.16795 | ## Does a shared suit matter? Suit overlap shows up in the numbers. With a suit in common JTo has 68.46% equity, and with none in common it has 67.48%. JTo does better with a shared suit, by 0.98 points. **J9s against JTo by suit overlap, in percent** | Deals | Specific deals | Share of deals | J9s wins | Ties | JTo wins | J9s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 26.275 | 10.535 | 63.190 | 31.542 | | No shared suit | 24 | 66.67 | 27.361 | 10.319 | 62.320 | 32.521 | ## How often this matchup comes up Exactly 36 specific deals fit this matchup in one seat order, which is 0.0022% of 1,624,350; both orders together give 72, or 0.0044%. ## A worked example Take a $200 pot built from $100 each. JTo's equity of 67.80% is worth $135.60, a $35.60 edge, and J9s' 32.20% is worth $64.40, which is $35.60 under its stake. Out of 1,000 deals you should see around 626 outright wins for JTo, 270 for J9s, and 104 split pots. ## The same matchup from the other side JTo against J9s adds nothing new: it is 67.80% for JTo and 32.20% for J9s, the same figures reversed. ## Keep exploring The calculator link fills in Js9s against JhTd, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength. - [Open Js9s against JhTd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=Js9s&p2=JhTd) - [J9s combos](https://georgelipoker.com/combos/j9s.md) - [JTo combos](https://georgelipoker.com/combos/jto.md) - [J9s vs T9s](https://georgelipoker.com/equity/j9s-vs-t9s.md) - [J9s vs 33](https://georgelipoker.com/equity/j9s-vs-33.md) - [44 vs JTo](https://georgelipoker.com/equity/44-vs-jto.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 36 specific J9s against JTo deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [J9s vs T9s: preflop equity](https://georgelipoker.com/equity/j9s-vs-t9s.md) - [J9s vs 33: preflop equity](https://georgelipoker.com/equity/j9s-vs-33.md) - [44 vs JTo: preflop equity](https://georgelipoker.com/equity/44-vs-jto.md)