--- title: "AJs vs A8s: preflop equity" url: "https://georgelipoker.com/equity/ajs-vs-a8s.md" canonical_url: "https://georgelipoker.com/equity/ajs-vs-a8s" last_updated: "2026-10-23" type: "reference" summary: "AJs is a big favorite over A8s before the flop: 69.80% to 30.20% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ajs-vs-kts.md", "https://georgelipoker.com/equity/ajs-vs-kqo.md", "https://georgelipoker.com/equity/ako-vs-a8s.md"] --- # AJs vs A8s: preflop equity AJs is a big favorite over A8s before the flop: 69.80% to 30.20% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts AJs at 69.80% and A8s at 30.20% when the two hands see all five board cards. ## AJs against A8s: the numbers **Exact preflop results for AJs against A8s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AJs | 66.235 | 7.138 | 26.627 | 69.804 | | A8s | 26.627 | 7.138 | 66.235 | 30.196 | AJs meets A8s, and both are suited hands. The two hands share a rank, and the one with the better other card dominates: it wins most kicker battles when that shared rank hits. AJs is well ahead, and A8s needs a specific kind of board to catch up. A split pot comes up on 7.14% of boards, so the wins and the equity differ by half of that. For context, AJs sits at number 11 of 169 starting hands and A8s at number 21 when each is run against a random hand. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AJs | 13,610,000 | 1,467,000 | 5,471,000 | | A8s | 5,471,000 | 1,467,000 | 13,610,000 | Exact total: 12 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. **AJs 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) | | --- | --- | --- | --- | --- | | AJs | 2.312 | 1.510 | 3.756 | 0.433 | | A8s | 0.433 | 3.756 | 1.510 | 2.312 | 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 Across the five flop textures AJs' equity moves by 17.09 points, from 59.11% on low rainbow flops (nine high or lower) to 76.20% on rainbow flops topped by a ten or better. AJs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AJs against A8s by flop texture, in percent** | Flop | Share of flops | AJs wins | Ties | A8s wins | AJs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 73.492 | 5.416 | 21.092 | 76.200 | | Rainbow, nine or lower | 7.042 | 57.043 | 4.129 | 38.828 | 59.108 | | Two-tone | 46.543 | 67.092 | 4.649 | 28.259 | 69.416 | | Monotone | 5.215 | 60.679 | 6.271 | 33.050 | 63.815 | | Paired | 17.333 | 59.351 | 17.674 | 22.975 | 68.188 | 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 How much does the opponent matter? Compared with its random-hand 65.39%, AJs changes by +4.41 points, and A8s, from 61.94%, by -31.74. **AJs 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 | | --- | --- | --- | --- | --- | | AJs, all flops | 69.804 | 65.393 | +4.411 | 1.06745 | | AJs, rainbow, ten or higher | 76.200 | 65.393 | +10.807 | 1.16526 | | AJs, rainbow, nine or lower | 59.108 | 65.393 | -6.285 | 0.90389 | | AJs, two-tone | 69.416 | 65.393 | +4.023 | 1.06152 | | AJs, monotone | 63.815 | 65.393 | -1.578 | 0.97587 | | AJs, paired | 68.188 | 65.393 | +2.795 | 1.04274 | | A8s, all flops | 30.196 | 61.944 | -31.748 | 0.48747 | | A8s, rainbow, ten or higher | 23.800 | 61.944 | -38.144 | 0.38422 | | A8s, rainbow, nine or lower | 40.892 | 61.944 | -21.052 | 0.66014 | | A8s, two-tone | 30.584 | 61.944 | -31.360 | 0.49374 | | A8s, monotone | 36.185 | 61.944 | -25.759 | 0.58416 | | A8s, paired | 31.812 | 61.944 | -30.132 | 0.51356 | ## Does a shared suit matter? Suits do not split this matchup, because no legal deal has the hands holding the same suit. **AJs against A8s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AJs wins | Ties | A8s wins | AJs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 66.235 | 7.138 | 26.627 | 69.804 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 12 are AJs in one seat and A8s in the other (0.0007%); with the seats swapped too, 24 (0.0015%). ## A worked example Put $100 each into a $200 pot and deal every board once: AJs averages $139.60 back, ahead of its $100 by $39.60, while A8s averages $60.40, short of its $100 by $39.60. In 1,000 deals of exactly this matchup, expect about 662 won outright by AJs, about 266 won outright by A8s and about 72 split. ## The same matchup from the other side The mirror image, A8s against AJs, is 30.20% to 69.80%, and its address redirects to this page. ## Keep exploring Open the calculator with AsJs against Ah8h 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 AsJs against Ah8h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsJs&p2=Ah8h) - [AJs combos](https://georgelipoker.com/combos/ajs.md) - [A8s combos](https://georgelipoker.com/combos/a8s.md) - [AJs vs KTs](https://georgelipoker.com/equity/ajs-vs-kts.md) - [AJs vs KQo](https://georgelipoker.com/equity/ajs-vs-kqo.md) - [AKo vs A8s](https://georgelipoker.com/equity/ako-vs-a8s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed All 1,712,304 five-card boards are dealt for every suit pattern among the 12 specific deals of AJs against A8s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AJs vs KTs: preflop equity](https://georgelipoker.com/equity/ajs-vs-kts.md) - [AJs vs KQo: preflop equity](https://georgelipoker.com/equity/ajs-vs-kqo.md) - [AKo vs A8s: preflop equity](https://georgelipoker.com/equity/ako-vs-a8s.md)