--- title: "AJo vs 64s: preflop equity" url: "https://georgelipoker.com/equity/ajo-vs-64s.md" canonical_url: "https://georgelipoker.com/equity/ajo-vs-64s" last_updated: "2026-10-23" type: "reference" summary: "AJo is a big favorite over 64s before the flop: 60.27% to 39.73% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ajo-vs-53s.md", "https://georgelipoker.com/equity/ajo-vs-43s.md", "https://georgelipoker.com/equity/kqs-vs-64s.md"] --- # AJo vs 64s: preflop equity AJo is a big favorite over 64s before the flop: 60.27% to 39.73% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, AJo holds 60.27% equity against 64s, which leaves 64s with 39.73%. ## AJo against 64s: the numbers **Exact preflop results for AJo against 64s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AJo | 60.030 | 0.473 | 39.497 | 60.267 | | 64s | 39.497 | 0.473 | 60.030 | 39.733 | The matchup pits an offsuit hand against a suited hand. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. AJo is ahead, but 64s is far from dead: it takes 395 of every 1,000 deals outright. Ties are 0.47% of the outcomes here; each tied board gives both hands half the pot. For context, AJo sits at number 15 of 169 starting hands and 64s at number 138 when each is run against a random hand. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AJo | 49,339,000 | 389,000 | 32,463,000 | | 64s | 32,463,000 | 389,000 | 49,339,000 | Exact total: 48 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. **AJo 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) | | --- | --- | --- | --- | --- | | AJo | 1.517 | 1.666 | 2.532 | 0.659 | | 64s | 0.659 | 2.532 | 1.666 | 1.517 | The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call. ## Who is ahead on which flops Split by what the flop looks like, AJo peaks at 68.66% on rainbow flops topped by a ten or better and bottoms out at 33.17% on low rainbow flops (nine high or lower). 64s is ahead on low rainbow flops (nine high or lower), even though it trails AJo when every flop is counted. **AJo against 64s by flop texture, in percent** | Flop | Share of flops | AJo wins | Ties | 64s wins | AJo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.717 | 68.571 | 0.172 | 31.257 | 68.657 | | Rainbow, nine or lower | 6.313 | 32.741 | 0.859 | 66.400 | 33.171 | | Two-tone | 46.667 | 58.454 | 0.293 | 41.253 | 58.601 | | Monotone | 5.212 | 57.237 | 2.423 | 40.340 | 58.448 | | Paired | 17.091 | 62.916 | 0.661 | 36.423 | 63.246 | 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 Against one random hand instead, AJo holds 63.56% and 64s holds 41.33%. Facing each other changes that by -3.29 points for AJo and -1.60 points for 64s. **AJo 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 | | --- | --- | --- | --- | --- | | AJo, all flops | 60.267 | 63.563 | -3.296 | 0.94815 | | AJo, rainbow, ten or higher | 68.657 | 63.563 | +5.094 | 1.08014 | | AJo, rainbow, nine or lower | 33.171 | 63.563 | -30.392 | 0.52186 | | AJo, two-tone | 58.601 | 63.563 | -4.962 | 0.92194 | | AJo, monotone | 58.448 | 63.563 | -5.115 | 0.91953 | | AJo, paired | 63.246 | 63.563 | -0.317 | 0.99501 | | 64s, all flops | 39.733 | 41.333 | -1.600 | 0.96129 | | 64s, rainbow, ten or higher | 31.343 | 41.333 | -9.990 | 0.75830 | | 64s, rainbow, nine or lower | 66.829 | 41.333 | +25.496 | 1.61684 | | 64s, two-tone | 41.399 | 41.333 | +0.066 | 1.00160 | | 64s, monotone | 41.552 | 41.333 | +0.219 | 1.00530 | | 64s, paired | 36.754 | 41.333 | -4.579 | 0.88922 | ## Does a shared suit matter? Does suit overlap move the numbers? AJo has 60.98% when the hands share a suit and 59.55% when they do not. AJo does better with a shared suit, by 1.43 points. **AJo against 64s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AJo wins | Ties | 64s wins | AJo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 60.723 | 0.514 | 38.763 | 60.980 | | No shared suit | 24 | 50.00 | 59.338 | 0.432 | 40.230 | 59.554 | ## How often this matchup comes up This page stands for 48 specific-card matchups (0.0030% of 1,624,350 ordered deals), or 96 once you count the seats both ways (0.0059%). ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average AJo takes back $120.54 of it, which is $20.54 more than it put in, and 64s takes back $79.46, $20.54 less than it put in. In 1,000 deals of exactly this matchup, expect about 600 won outright by AJo, about 395 won outright by 64s and about 5 split. ## The same matchup from the other side 64s against AJo adds nothing new: it is 39.73% for 64s and 60.27% for AJo, the same figures reversed. ## Keep exploring AsJh 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 AsJh against 6d4d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsJh&p2=6d4d) - [AJo combos](https://georgelipoker.com/combos/ajo.md) - [64s combos](https://georgelipoker.com/combos/64s.md) - [AJo vs 53s](https://georgelipoker.com/equity/ajo-vs-53s.md) - [AJo vs 43s](https://georgelipoker.com/equity/ajo-vs-43s.md) - [KQs vs 64s](https://georgelipoker.com/equity/kqs-vs-64s.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 48 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 - [AJo vs 53s: preflop equity](https://georgelipoker.com/equity/ajo-vs-53s.md) - [AJo vs 43s: preflop equity](https://georgelipoker.com/equity/ajo-vs-43s.md) - [KQs vs 64s: preflop equity](https://georgelipoker.com/equity/kqs-vs-64s.md)