--- title: "JJ vs 64s: preflop equity" url: "https://georgelipoker.com/equity/jj-vs-64s.md" canonical_url: "https://georgelipoker.com/equity/jj-vs-64s" last_updated: "2026-10-23" type: "reference" summary: "JJ is a big favorite over 64s before the flop: 79.56% to 20.44% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/jj-vs-53s.md", "https://georgelipoker.com/equity/jj-vs-43s.md", "https://georgelipoker.com/equity/tt-vs-64s.md"] --- # JJ vs 64s: preflop equity JJ is a big favorite over 64s before the flop: 79.56% to 20.44% equity, counted exactly over every board, with the split by flop type and suit. In equity, JJ against 64s stands at 79.56% to 20.44%, a gap of 59.12 points. ## JJ against 64s: the numbers **Exact preflop results for JJ against 64s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JJ | 79.343 | 0.426 | 20.231 | 79.556 | | 64s | 20.231 | 0.426 | 79.343 | 20.444 | The first hand is a pocket pair; the second is a suited hand. Here a pair faces two cards that are both smaller, so the other hand needs to pair up and still be behind. A lead of 59.12 points is large but not decisive: 64s still takes about 202 of every 1,000 deals. Ties are 0.43% of the outcomes here; each tied board gives both hands half the pot. Ranked by equity against a random hand, JJ is number 4 of the 169 starting hands and 64s is number 138. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JJ | 32,606,000 | 175,000 | 8,314,000 | | 64s | 8,314,000 | 175,000 | 32,606,000 | 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 64s 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 | 3.891 | 1.260 | 4.943 | 0.257 | | 64s | 0.257 | 4.943 | 1.260 | 3.891 | The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity. ## Who is ahead on which flops By flop texture, JJ's equity runs from 65.01% on low rainbow flops (nine high or lower) up to 85.41% on rainbow flops topped by a ten or better. 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 64s by flop texture, in percent** | Flop | Share of flops | JJ wins | Ties | 64s wins | JJ equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 85.314 | 0.184 | 14.502 | 85.406 | | Rainbow, nine or lower | 6.314 | 64.580 | 0.851 | 34.569 | 65.005 | | Two-tone | 46.545 | 77.567 | 0.303 | 22.130 | 77.718 | | Monotone | 5.212 | 72.960 | 2.435 | 24.605 | 74.177 | | Paired | 17.334 | 82.937 | 0.343 | 16.720 | 83.108 | 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 Start from the random-hand figures, 77.47% for JJ and 41.33% for 64s. This opponent changes them by +2.09 and -20.89 points. **JJ and 64s 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 | 79.556 | 77.469 | +2.087 | 1.02694 | | JJ, rainbow, ten or higher | 85.406 | 77.469 | +7.937 | 1.10245 | | JJ, rainbow, nine or lower | 65.005 | 77.469 | -12.464 | 0.83911 | | JJ, two-tone | 77.718 | 77.469 | +0.249 | 1.00321 | | JJ, monotone | 74.177 | 77.469 | -3.292 | 0.95751 | | JJ, paired | 83.108 | 77.469 | +5.639 | 1.07279 | | 64s, all flops | 20.444 | 41.333 | -20.889 | 0.49462 | | 64s, rainbow, ten or higher | 14.594 | 41.333 | -26.739 | 0.35308 | | 64s, rainbow, nine or lower | 34.995 | 41.333 | -6.338 | 0.84666 | | 64s, two-tone | 22.282 | 41.333 | -19.051 | 0.53908 | | 64s, monotone | 25.823 | 41.333 | -15.510 | 0.62476 | | 64s, paired | 16.892 | 41.333 | -24.441 | 0.40868 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, JJ has 80.14%; looking only at deals where they do not, 78.97%. JJ does better with a shared suit, by 1.17 points. **JJ against 64s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JJ wins | Ties | 64s wins | JJ equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 79.908 | 0.470 | 19.622 | 80.143 | | No shared suit | 12 | 50.00 | 78.777 | 0.383 | 20.840 | 78.969 | ## How often this matchup comes up JJ against 64s is made up of 24 specific-card matchups in one seat order, 0.0015% of the 1,624,350 ordered deals, and 48 counting both seat orders, 0.0030%. ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average JJ takes back $159.12 of it, which is $59.12 more than it put in, and 64s takes back $40.88, $59.12 less than it put in. Scaled to 1,000 deals, that is roughly 794 wins for JJ, 202 for 64s and 4 chopped pots. ## The same matchup from the other side The reversed view, 64s against JJ, shows 20.44% for 64s and 79.56% for JJ. It is the same count, so it redirects here. ## Keep exploring JsJh against 6d4d 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 6d4d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsJh&p2=6d4d) - [JJ combos](https://georgelipoker.com/combos/jj.md) - [64s combos](https://georgelipoker.com/combos/64s.md) - [JJ vs 53s](https://georgelipoker.com/equity/jj-vs-53s.md) - [JJ vs 43s](https://georgelipoker.com/equity/jj-vs-43s.md) - [TT vs 64s](https://georgelipoker.com/equity/tt-vs-64s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 24 deals of JJ against 64s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [JJ vs 53s: preflop equity](https://georgelipoker.com/equity/jj-vs-53s.md) - [JJ vs 43s: preflop equity](https://georgelipoker.com/equity/jj-vs-43s.md) - [TT vs 64s: preflop equity](https://georgelipoker.com/equity/tt-vs-64s.md)