--- title: "JJ vs 43s: preflop equity" url: "https://georgelipoker.com/equity/jj-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/jj-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "JJ is a big favorite over 43s before the flop: 79.54% to 20.47% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/tt-vs-43s.md", "https://georgelipoker.com/equity/jj-vs-53s.md", "https://georgelipoker.com/equity/qq-vs-43s.md"] --- # JJ vs 43s: preflop equity JJ is a big favorite over 43s before the flop: 79.54% to 20.47% equity, counted exactly over every board, with the split by flop type and suit. Over all 1,712,304 boards that can follow this deal, JJ finishes with 79.54% of the pot and 43s with 20.46%. ## JJ against 43s: the numbers **Exact preflop results for JJ against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JJ | 79.293 | 0.484 | 20.223 | 79.535 | | 43s | 20.223 | 0.484 | 79.293 | 20.465 | The first hand is a pocket pair; the second is a suited hand. A pair against two lower cards is a lopsided matchup: the pair is ahead and the other hand has no overcard to catch. JJ is well ahead, and 43s needs a specific kind of board to catch up. The tie share is 0.48%: on those boards the pot is chopped and neither hand wins outright. For context, JJ sits at number 4 of 169 starting hands and 43s at number 150 when each is run against a random hand. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JJ | 32,586,000 | 199,000 | 8,311,000 | | 43s | 8,311,000 | 199,000 | 32,586,000 | 24 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. **JJ 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) | | --- | --- | --- | --- | --- | | JJ | 3.886 | 1.261 | 4.945 | 0.257 | | 43s | 0.257 | 4.945 | 1.261 | 3.886 | 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 JJ (84.49%); low rainbow flops (nine high or lower) are the worst (68.40%). JJ stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **JJ against 43s by flop texture, in percent** | Flop | Share of flops | JJ wins | Ties | 43s wins | JJ equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 84.384 | 0.214 | 15.402 | 84.491 | | Rainbow, nine or lower | 6.314 | 67.863 | 1.073 | 31.064 | 68.400 | | Two-tone | 46.545 | 77.505 | 0.364 | 22.131 | 77.687 | | Monotone | 5.212 | 72.919 | 2.576 | 24.505 | 74.207 | | Paired | 17.334 | 82.949 | 0.343 | 16.708 | 83.120 | A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 77.47%, JJ changes by +2.07 points, and 43s, from 38.64%, by -18.18. **JJ 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 | | --- | --- | --- | --- | --- | | JJ, all flops | 79.535 | 77.469 | +2.066 | 1.02667 | | JJ, rainbow, ten or higher | 84.491 | 77.469 | +7.022 | 1.09064 | | JJ, rainbow, nine or lower | 68.400 | 77.469 | -9.069 | 0.88293 | | JJ, two-tone | 77.687 | 77.469 | +0.218 | 1.00281 | | JJ, monotone | 74.207 | 77.469 | -3.262 | 0.95789 | | JJ, paired | 83.120 | 77.469 | +5.651 | 1.07295 | | 43s, all flops | 20.465 | 38.642 | -18.177 | 0.52961 | | 43s, rainbow, ten or higher | 15.509 | 38.642 | -23.133 | 0.40135 | | 43s, rainbow, nine or lower | 31.600 | 38.642 | -7.042 | 0.81776 | | 43s, two-tone | 22.313 | 38.642 | -16.329 | 0.57743 | | 43s, monotone | 25.793 | 38.642 | -12.849 | 0.66749 | | 43s, paired | 16.880 | 38.642 | -21.762 | 0.43683 | ## Does a shared suit matter? The suit split reads 80.12% for JJ with a shared suit and 78.95% without one. JJ does better with a shared suit, by 1.17 points. **JJ against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JJ wins | Ties | 43s wins | JJ equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 79.858 | 0.523 | 19.619 | 80.119 | | No shared suit | 12 | 50.00 | 78.728 | 0.445 | 20.827 | 78.950 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 24 are JJ in one seat and 43s in the other (0.0015%); with the seats swapped too, 48 (0.0030%). ## A worked example To see what the equity is worth, imagine $100 each in a $200 pot. JJ is worth $159.08 on average (+$59.08); 43s is worth $40.92 (-$59.08). Scaled to 1,000 deals, that is roughly 793 wins for JJ, 202 for 43s and 5 chopped pots. ## The same matchup from the other side 43s versus JJ is this same page seen from the other hand: 20.46% for 43s, 79.54% for JJ. ## Keep exploring Open the calculator with JsJh against 4d3d 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 JsJh against 4d3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsJh&p2=4d3d) - [JJ combos](https://georgelipoker.com/combos/jj.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [TT vs 43s](https://georgelipoker.com/equity/tt-vs-43s.md) - [JJ vs 53s](https://georgelipoker.com/equity/jj-vs-53s.md) - [QQ vs 43s](https://georgelipoker.com/equity/qq-vs-43s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 24 specific JJ against 43s 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 - [TT vs 43s: preflop equity](https://georgelipoker.com/equity/tt-vs-43s.md) - [JJ vs 53s: preflop equity](https://georgelipoker.com/equity/jj-vs-53s.md) - [QQ vs 43s: preflop equity](https://georgelipoker.com/equity/qq-vs-43s.md)