--- title: "77 vs A8s: preflop equity" url: "https://georgelipoker.com/equity/77-vs-a8s.md" canonical_url: "https://georgelipoker.com/equity/77-vs-a8s" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, 77 or A8s? 77 leads 53.72% to 46.28% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/77-vs-kts.md", "https://georgelipoker.com/equity/77-vs-kqo.md", "https://georgelipoker.com/equity/aqs-vs-a8s.md"] --- # 77 vs A8s: preflop equity Who is ahead, 77 or A8s? 77 leads 53.72% to 46.28% before the flop, counted exactly over every board, with the split by flop type and suit. In equity, 77 against A8s stands at 53.72% to 46.28%, a gap of 7.44 points. ## 77 against A8s: the numbers **Exact preflop results for 77 against A8s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | 77 | 53.522 | 0.390 | 46.088 | 53.717 | | A8s | 46.088 | 0.390 | 53.522 | 46.283 | 77, a pocket pair, plays A8s, a suited hand. This is a pair against two overcards, a matchup that stays close because the other hand only needs one of its ranks to appear. This is close to even money, with 77 a little ahead. Of every 100 boards, about 0.39 are split pots, and the equity figures already include them. For context, 77 sits at number 9 of 169 starting hands and A8s at number 21 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 | | --- | --- | --- | --- | | 77 | 21,995,000 | 160,000 | 18,940,000 | | A8s | 18,940,000 | 160,000 | 21,995,000 | 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. **77 against A8s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | 77 | 1.161 | 1.868 | 2.170 | 0.862 | | A8s | 0.862 | 2.170 | 1.868 | 1.161 | 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 If you know the kind of flop that came, the numbers shift: 77 holds 61.28% on low rainbow flops (nine high or lower) and 51.96% on two-tone flops. 77 stays ahead on all five textures. **77 against A8s by flop texture, in percent** | Flop | Share of flops | 77 wins | Ties | A8s wins | 77 equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.220 | 52.683 | 0.217 | 47.100 | 52.792 | | Rainbow, nine or lower | 5.689 | 61.043 | 0.478 | 38.479 | 61.282 | | Two-tone | 46.545 | 51.833 | 0.249 | 47.918 | 51.957 | | Monotone | 5.212 | 51.315 | 2.389 | 46.296 | 52.510 | | Paired | 17.334 | 57.473 | 0.394 | 42.133 | 57.670 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand Compared with a random opponent, this matchup shifts 77 from 66.24% by -12.52 points and A8s from 61.94% by -15.66 points. **77 and A8s 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 | | --- | --- | --- | --- | --- | | 77, all flops | 53.717 | 66.236 | -12.519 | 0.81099 | | 77, rainbow, ten or higher | 52.792 | 66.236 | -13.444 | 0.79703 | | 77, rainbow, nine or lower | 61.282 | 66.236 | -4.954 | 0.92521 | | 77, two-tone | 51.957 | 66.236 | -14.279 | 0.78442 | | 77, monotone | 52.510 | 66.236 | -13.726 | 0.79277 | | 77, paired | 57.670 | 66.236 | -8.566 | 0.87067 | | A8s, all flops | 46.283 | 61.944 | -15.661 | 0.74717 | | A8s, rainbow, ten or higher | 47.208 | 61.944 | -14.736 | 0.76211 | | A8s, rainbow, nine or lower | 38.718 | 61.944 | -23.226 | 0.62505 | | A8s, two-tone | 48.043 | 61.944 | -13.901 | 0.77559 | | A8s, monotone | 47.490 | 61.944 | -14.454 | 0.76666 | | A8s, paired | 42.330 | 61.944 | -19.614 | 0.68336 | ## Does a shared suit matter? Split by suits, the deals give 77 53.89% when the hands overlap in a suit and 53.55% when they do not. 77 does better with a shared suit, by 0.34 points. **77 against A8s by suit overlap, in percent** | Deals | Specific deals | Share of deals | 77 wins | Ties | A8s wins | 77 equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 53.672 | 0.432 | 45.896 | 53.888 | | No shared suit | 12 | 50.00 | 53.372 | 0.349 | 46.279 | 53.546 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 24 are 77 in one seat and A8s in the other (0.0015%); with the seats swapped too, 48 (0.0030%). ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average 77 takes back $107.44 of it, which is $7.44 more than it put in, and A8s takes back $92.56, $7.44 less than it put in. A thousand deals look like this: 77 takes 535, A8s takes 461, 4 are ties. ## The same matchup from the other side A8s versus 77 is this same page seen from the other hand: 46.28% for A8s, 53.72% for 77. ## Keep exploring Try 7s7h against Ad8d 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 7s7h against Ad8d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=7s7h&p2=Ad8d) - [77 combos](https://georgelipoker.com/combos/77.md) - [A8s combos](https://georgelipoker.com/combos/a8s.md) - [77 vs KTs](https://georgelipoker.com/equity/77-vs-kts.md) - [77 vs KQo](https://georgelipoker.com/equity/77-vs-kqo.md) - [AQs vs A8s](https://georgelipoker.com/equity/aqs-vs-a8s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 24 deals of 77 against A8s 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 - [77 vs KTs: preflop equity](https://georgelipoker.com/equity/77-vs-kts.md) - [77 vs KQo: preflop equity](https://georgelipoker.com/equity/77-vs-kqo.md) - [AQs vs A8s: preflop equity](https://georgelipoker.com/equity/aqs-vs-a8s.md)