--- title: "AA vs A5s: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-a5s.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-a5s" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over A5s before the flop: 86.69% to 13.31% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aa-vs-a6s.md", "https://georgelipoker.com/equity/aa-vs-kto.md", "https://georgelipoker.com/equity/kk-vs-a5s.md"] --- # AA vs A5s: preflop equity AA is a big favorite over A5s before the flop: 86.69% to 13.31% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, AA is ahead of A5s by 73.38 points of equity, 86.69% to 13.31%. ## AA against A5s: the numbers **Exact preflop results for AA against A5s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 86.056 | 1.274 | 12.670 | 86.693 | | A5s | 12.670 | 1.274 | 86.056 | 13.307 | AA, a pocket pair, plays A5s, a suited hand. The non-pair hand shares a rank with the pair, so two of its outs for pairing are blocked by the pair itself. This is one of the lopsided matchups: A5s wins only 12.67% of the boards outright. A split pot comes up on 1.27% of boards, so the wins and the equity differ by half of that. Place 1 of 169 belongs to AA and place 30 belongs to A5s in the ranking against a random hand. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AA | 17,682,000 | 262,000 | 2,603,000 | | A5s | 2,603,000 | 262,000 | 17,682,000 | 12 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. **AA against A5s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AA | 6.515 | 1.162 | 7.893 | 0.153 | | A5s | 0.153 | 7.893 | 1.162 | 6.515 | 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 Break the boards down by their first three cards and AA is strongest on rainbow flops topped by a ten or better (92.21%) and weakest on monotone flops (76.83%). AA stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AA against A5s by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | A5s wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.740 | 91.598 | 1.220 | 7.182 | 92.208 | | Rainbow, nine or lower | 7.042 | 81.485 | 2.403 | 16.112 | 82.686 | | Two-tone | 46.236 | 84.467 | 1.350 | 14.183 | 85.142 | | Monotone | 5.151 | 75.649 | 2.359 | 21.992 | 76.828 | | Paired | 17.831 | 87.608 | 0.393 | 11.999 | 87.805 | 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 The table below sets each hand against its own random-hand baseline: a change of +1.49 points for AA, from 85.20%, and -46.61 for A5s, from 59.92%. **AA and A5s 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 | | --- | --- | --- | --- | --- | | AA, all flops | 86.693 | 85.204 | +1.489 | 1.01748 | | AA, rainbow, ten or higher | 92.208 | 85.204 | +7.004 | 1.08220 | | AA, rainbow, nine or lower | 82.686 | 85.204 | -2.518 | 0.97045 | | AA, two-tone | 85.142 | 85.204 | -0.062 | 0.99927 | | AA, monotone | 76.828 | 85.204 | -8.376 | 0.90169 | | AA, paired | 87.805 | 85.204 | +2.601 | 1.03053 | | A5s, all flops | 13.307 | 59.923 | -46.616 | 0.22207 | | A5s, rainbow, ten or higher | 7.792 | 59.923 | -52.131 | 0.13003 | | A5s, rainbow, nine or lower | 17.314 | 59.923 | -42.609 | 0.28894 | | A5s, two-tone | 14.858 | 59.923 | -45.065 | 0.24795 | | A5s, monotone | 23.172 | 59.923 | -36.751 | 0.38670 | | A5s, paired | 12.195 | 59.923 | -47.728 | 0.20351 | ## Does a shared suit matter? For this pair the shared-suit row is empty: the two hands cannot both own a card of one suit without reusing a card. **AA against A5s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | A5s wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 86.056 | 1.274 | 12.670 | 86.693 | ## How often this matchup comes up Counting specific cards, AA against A5s appears in 12 of the 1,624,350 ordered heads-up deals (0.0007%), and in 24 when the seats are swapped too (0.0015%). ## A worked example To see what the equity is worth, imagine $100 each in a $200 pot. AA is worth $173.38 on average (+$73.38); A5s is worth $26.62 (-$73.38). Out of 1,000 deals you should see around 860 outright wins for AA, 127 for A5s, and 13 split pots. ## The same matchup from the other side The mirror image, A5s against AA, is 13.31% to 86.69%, and its address redirects to this page. ## Keep exploring Open the calculator with AsAh against Ad5d 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 AsAh against Ad5d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=Ad5d) - [AA combos](https://georgelipoker.com/combos/aa.md) - [A5s combos](https://georgelipoker.com/combos/a5s.md) - [AA vs A6s](https://georgelipoker.com/equity/aa-vs-a6s.md) - [AA vs KTo](https://georgelipoker.com/equity/aa-vs-kto.md) - [KK vs A5s](https://georgelipoker.com/equity/kk-vs-a5s.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 AA against A5s, 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 - [AA vs A6s: preflop equity](https://georgelipoker.com/equity/aa-vs-a6s.md) - [AA vs KTo: preflop equity](https://georgelipoker.com/equity/aa-vs-kto.md) - [KK vs A5s: preflop equity](https://georgelipoker.com/equity/kk-vs-a5s.md)