--- title: "JJ vs A5s: preflop equity" url: "https://georgelipoker.com/equity/jj-vs-a5s.md" canonical_url: "https://georgelipoker.com/equity/jj-vs-a5s" last_updated: "2026-10-23" type: "reference" summary: "JJ is a big favorite over A5s before the flop: 66.69% to 33.31% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/jj-vs-a6s.md", "https://georgelipoker.com/equity/jj-vs-kto.md", "https://georgelipoker.com/equity/tt-vs-a5s.md"] --- # JJ vs A5s: preflop equity JJ is a big favorite over A5s before the flop: 66.69% to 33.31% equity, counted exactly over every board, with the split by flop type and suit. In equity, JJ against A5s stands at 66.69% to 33.31%, a gap of 33.38 points. ## JJ against A5s: the numbers **Exact preflop results for JJ against A5s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JJ | 66.482 | 0.411 | 33.107 | 66.687 | | A5s | 33.107 | 0.411 | 66.482 | 33.313 | The matchup pits a pocket pair against a suited hand. The pair sits between the other hand's two cards: one is higher and one is lower, so the pair is exposed to the higher card. That is a clear edge, 66.69% to 33.31%, but A5s still wins often enough that one hand proves nothing. A split pot comes up on 0.41% of boards, so the wins and the equity differ by half of that. For context, JJ sits at number 4 of 169 starting hands and A5s at number 30 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 | 27,321,000 | 169,000 | 13,605,000 | | A5s | 13,605,000 | 169,000 | 27,321,000 | The board total is exact, 24 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **JJ against A5s 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 | 2.002 | 1.504 | 3.021 | 0.500 | | A5s | 0.500 | 3.021 | 1.504 | 2.002 | 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 By flop texture, JJ's equity runs from 62.53% on monotone flops up to 71.24% on low rainbow flops (nine high or lower). JJ stays ahead on all five textures. **JJ against A5s by flop texture, in percent** | Flop | Share of flops | JJ wins | Ties | A5s wins | JJ equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 66.978 | 0.149 | 32.873 | 67.053 | | Rainbow, nine or lower | 7.042 | 70.728 | 1.018 | 28.254 | 71.237 | | Two-tone | 46.545 | 64.708 | 0.324 | 34.968 | 64.870 | | Monotone | 5.212 | 61.323 | 2.416 | 36.261 | 62.531 | | Paired | 17.334 | 70.390 | 0.156 | 29.454 | 70.468 | 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 The table below sets each hand against its own random-hand baseline: a change of -10.78 points for JJ, from 77.47%, and -26.61 for A5s, from 59.92%. **JJ and A5s 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 | 66.687 | 77.469 | -10.782 | 0.86082 | | JJ, rainbow, ten or higher | 67.053 | 77.469 | -10.416 | 0.86555 | | JJ, rainbow, nine or lower | 71.237 | 77.469 | -6.232 | 0.91955 | | JJ, two-tone | 64.870 | 77.469 | -12.599 | 0.83737 | | JJ, monotone | 62.531 | 77.469 | -14.938 | 0.80717 | | JJ, paired | 70.468 | 77.469 | -7.001 | 0.90963 | | A5s, all flops | 33.313 | 59.923 | -26.610 | 0.55593 | | A5s, rainbow, ten or higher | 32.947 | 59.923 | -26.976 | 0.54982 | | A5s, rainbow, nine or lower | 28.763 | 59.923 | -31.160 | 0.48000 | | A5s, two-tone | 35.130 | 59.923 | -24.793 | 0.58625 | | A5s, monotone | 37.469 | 59.923 | -22.454 | 0.62529 | | A5s, paired | 29.532 | 59.923 | -30.391 | 0.49283 | ## Does a shared suit matter? Does suit overlap move the numbers? JJ has 66.97% when the hands share a suit and 66.40% when they do not. JJ does better with a shared suit, by 0.57 points. **JJ against A5s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JJ wins | Ties | A5s wins | JJ equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 66.744 | 0.454 | 32.802 | 66.971 | | No shared suit | 12 | 50.00 | 66.221 | 0.367 | 33.412 | 66.404 | ## How often this matchup comes up The class pair covers 24 combinations of specific cards in a fixed seat order, 0.0015% of 1,624,350, and 48 (0.0030%) in either order. ## A worked example Put $100 each into a $200 pot and deal every board once: JJ averages $133.38 back, ahead of its $100 by $33.38, while A5s averages $66.62, short of its $100 by $33.38. Think in thousands: about 665 of 1,000 go to JJ, about 331 go to A5s, and about 4 are chopped. ## The same matchup from the other side Read it from the other side: A5s against JJ is the same matchup with the numbers swapped, so A5s holds 33.31% and JJ holds 66.69%. That address sends you back to this page. ## Keep exploring Try JsJh against Ad5d 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 JsJh against Ad5d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsJh&p2=Ad5d) - [JJ combos](https://georgelipoker.com/combos/jj.md) - [A5s combos](https://georgelipoker.com/combos/a5s.md) - [JJ vs A6s](https://georgelipoker.com/equity/jj-vs-a6s.md) - [JJ vs KTo](https://georgelipoker.com/equity/jj-vs-kto.md) - [TT vs A5s](https://georgelipoker.com/equity/tt-vs-a5s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Method: exact enumeration. The 24 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [JJ vs A6s: preflop equity](https://georgelipoker.com/equity/jj-vs-a6s.md) - [JJ vs KTo: preflop equity](https://georgelipoker.com/equity/jj-vs-kto.md) - [TT vs A5s: preflop equity](https://georgelipoker.com/equity/tt-vs-a5s.md)