--- title: "JJ vs 55: preflop equity" url: "https://georgelipoker.com/equity/jj-vs-55.md" canonical_url: "https://georgelipoker.com/equity/jj-vs-55" last_updated: "2026-10-23" type: "reference" summary: "JJ is a big favorite over 55 before the flop: 80.54% to 19.46% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/jj-vs-qjs.md", "https://georgelipoker.com/equity/jj-vs-k9s.md", "https://georgelipoker.com/equity/tt-vs-55.md"] --- # JJ vs 55: preflop equity JJ is a big favorite over 55 before the flop: 80.54% to 19.46% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, JJ is ahead of 55 by 61.08 points of equity, 80.54% to 19.46%. ## JJ against 55: the numbers **Exact preflop results for JJ against 55, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JJ | 80.333 | 0.417 | 19.250 | 80.541 | | 55 | 19.250 | 0.417 | 80.333 | 19.459 | Each side holds one of the pocket pairs: JJ and 55. Both hands are pairs, so the bigger pair is ahead on every board that does not pair a card below it. A gap this wide means 55 is in trouble before the flop and has few good runouts. About 0.42% of boards chop the pot, which is why equity sits slightly above the win figure for both hands. For context, JJ sits at number 4 of 169 starting hands and 55 at number 27 when each is run against a random hand. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JJ | 49,520,000 | 257,000 | 11,866,000 | | 55 | 11,866,000 | 257,000 | 49,520,000 | Exact total: 36 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate. **JJ against 55 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 | 4.139 | 1.245 | 5.195 | 0.242 | | 55 | 0.242 | 5.195 | 1.245 | 4.139 | 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 If you know the kind of flop that came, the numbers shift: JJ holds 86.38% on paired flops and 65.26% on low rainbow flops (nine high or lower). 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 55 by flop texture, in percent** | Flop | Share of flops | JJ wins | Ties | 55 wins | JJ equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 83.562 | 0.220 | 16.218 | 83.672 | | Rainbow, nine or lower | 6.314 | 64.859 | 0.799 | 34.342 | 65.258 | | Two-tone | 46.363 | 79.196 | 0.327 | 20.477 | 79.360 | | Monotone | 5.152 | 74.100 | 1.852 | 24.048 | 75.026 | | Paired | 17.576 | 86.197 | 0.373 | 13.430 | 86.384 | 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 Against one random hand instead, JJ holds 77.47% and 55 holds 60.33%. Facing each other changes that by +3.07 points for JJ and -40.87 points for 55. **JJ and 55 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 | 80.541 | 77.469 | +3.072 | 1.03965 | | JJ, rainbow, ten or higher | 83.672 | 77.469 | +6.203 | 1.08007 | | JJ, rainbow, nine or lower | 65.258 | 77.469 | -12.211 | 0.84238 | | JJ, two-tone | 79.360 | 77.469 | +1.891 | 1.02441 | | JJ, monotone | 75.026 | 77.469 | -2.443 | 0.96846 | | JJ, paired | 86.384 | 77.469 | +8.915 | 1.11508 | | 55, all flops | 19.459 | 60.325 | -40.866 | 0.32257 | | 55, rainbow, ten or higher | 16.328 | 60.325 | -43.997 | 0.27067 | | 55, rainbow, nine or lower | 34.742 | 60.325 | -25.583 | 0.57591 | | 55, two-tone | 20.640 | 60.325 | -39.685 | 0.34215 | | 55, monotone | 24.974 | 60.325 | -35.351 | 0.41399 | | 55, paired | 13.616 | 60.325 | -46.709 | 0.22571 | ## Does a shared suit matter? The suit split reads 80.67% for JJ with a shared suit and 79.89% without one. JJ does better with a shared suit, by 0.78 points. **JJ against 55 by suit overlap, in percent** | Deals | Specific deals | Share of deals | JJ wins | Ties | 55 wins | JJ equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 30 | 83.33 | 80.457 | 0.432 | 19.111 | 80.673 | | No shared suit | 6 | 16.67 | 79.713 | 0.343 | 19.944 | 79.885 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 36 are JJ in one seat and 55 in the other (0.0022%); with the seats swapped too, 72 (0.0044%). ## A worked example To see what the equity is worth, imagine $100 each in a $200 pot. JJ is worth $161.08 on average (+$61.08); 55 is worth $38.92 (-$61.08). Run 1,000 deals and the tally comes out near 803 for JJ, 193 for 55 and 4 ties. ## The same matchup from the other side Swap the hands and you get 55 with 19.46% against JJ with 80.54%. We keep one page per matchup, with the better-ranked hand first. ## Keep exploring JsJh against 5d5c is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open JsJh against 5d5c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsJh&p2=5d5c) - [JJ combos](https://georgelipoker.com/combos/jj.md) - [55 combos](https://georgelipoker.com/combos/55.md) - [JJ vs QJs](https://georgelipoker.com/equity/jj-vs-qjs.md) - [JJ vs K9s](https://georgelipoker.com/equity/jj-vs-k9s.md) - [TT vs 55](https://georgelipoker.com/equity/tt-vs-55.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 36 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [JJ vs QJs: preflop equity](https://georgelipoker.com/equity/jj-vs-qjs.md) - [JJ vs K9s: preflop equity](https://georgelipoker.com/equity/jj-vs-k9s.md) - [TT vs 55: preflop equity](https://georgelipoker.com/equity/tt-vs-55.md)