--- title: "JTs vs 43s: preflop equity" url: "https://georgelipoker.com/equity/jts-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/jts-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "JTs is a big favorite over 43s before the flop: 64.07% to 35.93% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/a2s-vs-43s.md", "https://georgelipoker.com/equity/jts-vs-53s.md", "https://georgelipoker.com/equity/q9s-vs-43s.md"] --- # JTs vs 43s: preflop equity JTs is a big favorite over 43s before the flop: 64.07% to 35.93% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, JTs is ahead of 43s by 28.14 points of equity, 64.07% to 35.93%. ## JTs against 43s: the numbers **Exact preflop results for JTs against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JTs | 63.467 | 1.200 | 35.333 | 64.067 | | 43s | 35.333 | 1.200 | 63.467 | 35.933 | Each side holds one of the suited hands: JTs and 43s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. The lead is steady rather than large, and the flop still has plenty of say in who wins. Of every 100 boards, about 1.20 are split pots, and the equity figures already include them. Among the 169 starting hands, JTs is number 45 and 43s is number 150 by strength against a random hand. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JTs | 17,388,000 | 329,000 | 9,680,000 | | 43s | 9,680,000 | 329,000 | 17,388,000 | 16 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 43s 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 | 1.783 | 1.576 | 2.830 | 0.561 | | 43s | 0.561 | 2.830 | 1.576 | 1.783 | 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 Rainbow flops topped by a ten or better are the best for JTs (70.53%); low rainbow flops (nine high or lower) are the worst (41.80%). The overall edge for JTs hides low rainbow flops (nine high or lower), where 43s comes out in front. **JTs against 43s by flop texture, in percent** | Flop | Share of flops | JTs wins | Ties | 43s wins | JTs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 70.215 | 0.627 | 29.158 | 70.528 | | Rainbow, nine or lower | 6.314 | 41.446 | 0.703 | 57.851 | 41.798 | | Two-tone | 46.727 | 63.268 | 0.596 | 36.136 | 63.566 | | Monotone | 5.273 | 59.299 | 3.836 | 36.865 | 61.217 | | Paired | 17.091 | 63.719 | 3.049 | 33.232 | 65.243 | 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 Against one random hand instead, JTs holds 57.53% and 43s holds 38.64%. Facing each other changes that by +6.54 points for JTs and -2.71 points for 43s. **JTs and 43s 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 | 64.067 | 57.528 | +6.539 | 1.11367 | | JTs, rainbow, ten or higher | 70.528 | 57.528 | +13.000 | 1.22598 | | JTs, rainbow, nine or lower | 41.798 | 57.528 | -15.730 | 0.72657 | | JTs, two-tone | 63.566 | 57.528 | +6.038 | 1.10496 | | JTs, monotone | 61.217 | 57.528 | +3.689 | 1.06413 | | JTs, paired | 65.243 | 57.528 | +7.715 | 1.13411 | | 43s, all flops | 35.933 | 38.642 | -2.709 | 0.92989 | | 43s, rainbow, ten or higher | 29.472 | 38.642 | -9.170 | 0.76269 | | 43s, rainbow, nine or lower | 58.202 | 38.642 | +19.560 | 1.50618 | | 43s, two-tone | 36.434 | 38.642 | -2.208 | 0.94286 | | 43s, monotone | 38.783 | 38.642 | +0.141 | 1.00365 | | 43s, paired | 34.757 | 38.642 | -3.885 | 0.89946 | ## Does a shared suit matter? The suit split reads 66.49% for JTs with a shared suit and 63.26% without one. JTs does better with a shared suit, by 3.23 points. **JTs against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JTs wins | Ties | 43s wins | JTs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 65.833 | 1.308 | 32.859 | 66.487 | | No shared suit | 12 | 75.00 | 62.678 | 1.164 | 36.158 | 63.260 | ## How often this matchup comes up How often does it happen? 16 of the 1,624,350 ordered deals (0.0010%) are JTs against 43s, and 32 (0.0020%) if either hand may sit in either seat. ## A worked example Worked example: both players commit $100, so $200 sits in the middle. Over every board, JTs' average share is $128.14 (a gain of $28.14) and 43s' is $71.86 (a loss of $28.14). A thousand deals look like this: JTs takes 635, 43s takes 353, 12 are ties. ## The same matchup from the other side 43s against JTs adds nothing new: it is 35.93% for 43s and 64.07% for JTs, the same figures reversed. ## Keep exploring Try JsTs against 4h3h 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 JsTs against 4h3h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsTs&p2=4h3h) - [JTs combos](https://georgelipoker.com/combos/jts.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [A2s vs 43s](https://georgelipoker.com/equity/a2s-vs-43s.md) - [JTs vs 53s](https://georgelipoker.com/equity/jts-vs-53s.md) - [Q9s vs 43s](https://georgelipoker.com/equity/q9s-vs-43s.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 16 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 - [A2s vs 43s: preflop equity](https://georgelipoker.com/equity/a2s-vs-43s.md) - [JTs vs 53s: preflop equity](https://georgelipoker.com/equity/jts-vs-53s.md) - [Q9s vs 43s: preflop equity](https://georgelipoker.com/equity/q9s-vs-43s.md)