--- title: "AKo vs A8s: preflop equity" url: "https://georgelipoker.com/equity/ako-vs-a8s.md" canonical_url: "https://georgelipoker.com/equity/ako-vs-a8s" last_updated: "2026-10-23" type: "reference" summary: "AKo is a big favorite over A8s before the flop: 69.68% to 30.32% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ako-vs-kts.md", "https://georgelipoker.com/equity/ako-vs-kqo.md", "https://georgelipoker.com/equity/ats-vs-a8s.md"] --- # AKo vs A8s: preflop equity AKo is a big favorite over A8s before the flop: 69.68% to 30.32% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, AKo holds 69.68% equity against A8s, which leaves A8s with 30.32%. ## AKo against A8s: the numbers **Exact preflop results for AKo against A8s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AKo | 67.432 | 4.500 | 28.068 | 69.682 | | A8s | 28.068 | 4.500 | 67.432 | 30.318 | One side is an offsuit hand, the other is a suited hand. Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up. A lead of 39.36 points is large but not decisive: A8s still takes about 281 of every 1,000 deals. The tie share is 4.50%: on those boards the pot is chopped and neither hand wins outright. In the ranking of all 169 starting hands, AKo is number 12 and A8s is number 21. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AKo | 41,567,000 | 2,774,000 | 17,302,000 | | A8s | 17,302,000 | 2,774,000 | 41,567,000 | 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. **AKo 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) | | --- | --- | --- | --- | --- | | AKo | 2.298 | 1.483 | 3.563 | 0.435 | | A8s | 0.435 | 3.563 | 1.483 | 2.298 | 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 AKo prefers rainbow flops topped by a ten or better, where it holds 76.80%, and likes low rainbow flops (nine high or lower) least, where it holds 56.95%. AKo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AKo against A8s by flop texture, in percent** | Flop | Share of flops | AKo wins | Ties | A8s wins | AKo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.905 | 75.577 | 2.452 | 21.971 | 76.803 | | Rainbow, nine or lower | 7.042 | 54.748 | 4.395 | 40.857 | 56.945 | | Two-tone | 46.527 | 67.118 | 2.714 | 30.168 | 68.475 | | Monotone | 5.192 | 62.317 | 4.009 | 33.674 | 64.321 | | Paired | 17.334 | 63.724 | 12.311 | 23.965 | 69.880 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand A random hand would give AKo 65.32% and A8s 61.94%. Against each other the change is +4.36 points for AKo and -31.62 for A8s. **AKo 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 | | --- | --- | --- | --- | --- | | AKo, all flops | 69.682 | 65.320 | +4.362 | 1.06678 | | AKo, rainbow, ten or higher | 76.803 | 65.320 | +11.483 | 1.17580 | | AKo, rainbow, nine or lower | 56.945 | 65.320 | -8.375 | 0.87179 | | AKo, two-tone | 68.475 | 65.320 | +3.155 | 1.04830 | | AKo, monotone | 64.321 | 65.320 | -0.999 | 0.98471 | | AKo, paired | 69.880 | 65.320 | +4.560 | 1.06981 | | A8s, all flops | 30.318 | 61.944 | -31.626 | 0.48944 | | A8s, rainbow, ten or higher | 23.197 | 61.944 | -38.747 | 0.37448 | | A8s, rainbow, nine or lower | 43.055 | 61.944 | -18.889 | 0.69506 | | A8s, two-tone | 31.525 | 61.944 | -30.419 | 0.50893 | | A8s, monotone | 35.679 | 61.944 | -26.265 | 0.57599 | | A8s, paired | 30.120 | 61.944 | -31.824 | 0.48625 | ## Does a shared suit matter? When the hands share a suit, AKo holds 70.52%; when they do not, it holds 69.26%. AKo does better with a shared suit, by 1.26 points. **AKo against A8s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AKo wins | Ties | A8s wins | AKo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 68.228 | 4.580 | 27.192 | 70.518 | | No shared suit | 24 | 66.67 | 67.033 | 4.461 | 28.506 | 69.264 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 36 are AKo in one seat and A8s in the other (0.0022%); with the seats swapped too, 72 (0.0044%). ## A worked example Take a $200 pot built from $100 each. AKo's equity of 69.68% is worth $139.36, a $39.36 edge, and A8s' 30.32% is worth $60.64, which is $39.36 under its stake. Out of 1,000 deals you should see around 674 outright wins for AKo, 281 for A8s, and 45 split pots. ## The same matchup from the other side Read it from the other side: A8s against AKo is the same matchup with the numbers swapped, so A8s holds 30.32% and AKo holds 69.68%. That address sends you back to this page. ## Keep exploring Open the calculator with AsKh against Ad8d already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking. - [Open AsKh against Ad8d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsKh&p2=Ad8d) - [AKo combos](https://georgelipoker.com/combos/ako.md) - [A8s combos](https://georgelipoker.com/combos/a8s.md) - [AKo vs KTs](https://georgelipoker.com/equity/ako-vs-kts.md) - [AKo vs KQo](https://georgelipoker.com/equity/ako-vs-kqo.md) - [ATs vs A8s](https://georgelipoker.com/equity/ats-vs-a8s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed This is an exact count with no sampling. For the 36 ways to deal one AKo and one A8s without reusing a card, grouped by suit pattern, every one of the 1,712,304 possible boards is dealt and both seven-card hands are compared. A tie counts as half a win in the equity column, and each board is counted once under each of its ten three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AKo vs KTs: preflop equity](https://georgelipoker.com/equity/ako-vs-kts.md) - [AKo vs KQo: preflop equity](https://georgelipoker.com/equity/ako-vs-kqo.md) - [ATs vs A8s: preflop equity](https://georgelipoker.com/equity/ats-vs-a8s.md)