--- title: "AA vs ATs: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-ats.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-ats" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over ATs before the flop: 86.66% to 13.34% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aa-vs-aqo.md", "https://georgelipoker.com/equity/aa-vs-ajo.md", "https://georgelipoker.com/equity/kk-vs-ats.md"] --- # AA vs ATs: preflop equity AA is a big favorite over ATs before the flop: 86.66% to 13.34% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, AA holds 86.66% equity against ATs, which leaves ATs with 13.34%. ## AA against ATs: the numbers **Exact preflop results for AA against ATs, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 86.052 | 1.223 | 12.725 | 86.664 | | ATs | 12.725 | 1.223 | 86.052 | 13.336 | The matchup pits a pocket pair against a suited hand. One hand holds a card of the same rank as the pair, which removes a card the pair needs and makes the pair a bigger favorite. This is one of the lopsided matchups: ATs wins only 12.73% of the boards outright. Ties are part of the picture: 1.22% of boards end in a split pot, and each side counts that as half a win. For context, AA sits at number 1 of 169 starting hands and ATs at number 13 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 | | --- | --- | --- | --- | | AA | 17,682,000 | 251,000 | 2,615,000 | | ATs | 2,615,000 | 251,000 | 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 ATs 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 | 6.499 | 1.162 | 7.859 | 0.154 | | ATs | 0.154 | 7.859 | 1.162 | 6.499 | 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 By flop texture, AA's equity runs from 76.81% on monotone flops up to 92.58% on low rainbow flops (nine high or lower). 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 ATs by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | ATs wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.011 | 88.595 | 1.058 | 10.347 | 89.124 | | Rainbow, nine or lower | 7.771 | 91.327 | 2.496 | 6.177 | 92.575 | | Two-tone | 46.236 | 84.467 | 1.289 | 14.244 | 85.111 | | Monotone | 5.151 | 75.649 | 2.322 | 22.029 | 76.810 | | Paired | 17.831 | 87.588 | 0.393 | 12.019 | 87.785 | A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank. ## Compared with a random hand A random hand would give AA 85.20% and ATs 64.60%. Against each other the change is +1.46 points for AA and -51.26 for ATs. **AA and ATs 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 | 86.664 | 85.204 | +1.460 | 1.01714 | | AA, rainbow, ten or higher | 89.124 | 85.204 | +3.920 | 1.04601 | | AA, rainbow, nine or lower | 92.575 | 85.204 | +7.371 | 1.08651 | | AA, two-tone | 85.111 | 85.204 | -0.093 | 0.99891 | | AA, monotone | 76.810 | 85.204 | -8.394 | 0.90148 | | AA, paired | 87.785 | 85.204 | +2.581 | 1.03029 | | ATs, all flops | 13.336 | 64.602 | -51.266 | 0.20643 | | ATs, rainbow, ten or higher | 10.876 | 64.602 | -53.726 | 0.16835 | | ATs, rainbow, nine or lower | 7.425 | 64.602 | -57.177 | 0.11493 | | ATs, two-tone | 14.889 | 64.602 | -49.713 | 0.23047 | | ATs, monotone | 23.190 | 64.602 | -41.412 | 0.35897 | | ATs, paired | 12.215 | 64.602 | -52.387 | 0.18908 | ## Does a shared suit matter? The hands cannot hold a suit in common here, which leaves a single case and a single number: 86.66% for AA. **AA against ATs by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | ATs wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 86.052 | 1.223 | 12.725 | 86.664 | ## How often this matchup comes up This page stands for 12 specific-card matchups (0.0007% of 1,624,350 ordered deals), or 24 once you count the seats both ways (0.0015%). ## A worked example With $100 from each side, the $200 pot is split on average as $173.32 for AA and $26.68 for ATs; the first side gains $73.32 per all-in and the second gives up $73.32. In 1,000 deals of exactly this matchup, expect about 861 won outright by AA, about 127 won outright by ATs and about 12 split. ## The same matchup from the other side One page covers both views. From ATs' side the equity is 13.34%, and from AA's side it is 86.66%. ## Keep exploring Open the calculator with AsAh against AdTd 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 AdTd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=AdTd) - [AA combos](https://georgelipoker.com/combos/aa.md) - [ATs combos](https://georgelipoker.com/combos/ats.md) - [AA vs AQo](https://georgelipoker.com/equity/aa-vs-aqo.md) - [AA vs AJo](https://georgelipoker.com/equity/aa-vs-ajo.md) - [KK vs ATs](https://georgelipoker.com/equity/kk-vs-ats.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Each figure is a complete count over boards. Take the 12 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AA vs AQo: preflop equity](https://georgelipoker.com/equity/aa-vs-aqo.md) - [AA vs AJo: preflop equity](https://georgelipoker.com/equity/aa-vs-ajo.md) - [KK vs ATs: preflop equity](https://georgelipoker.com/equity/kk-vs-ats.md)