--- title: "ATo vs A6s: preflop equity" url: "https://georgelipoker.com/equity/ato-vs-a6s.md" canonical_url: "https://georgelipoker.com/equity/ato-vs-a6s" last_updated: "2026-10-23" type: "reference" summary: "ATo is a big favorite over A6s before the flop: 67.29% to 32.71% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ato-vs-kto.md", "https://georgelipoker.com/equity/ato-vs-qts.md", "https://georgelipoker.com/equity/kjs-vs-a6s.md"] --- # ATo vs A6s: preflop equity ATo is a big favorite over A6s before the flop: 67.29% to 32.71% equity, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, ATo takes 67.29% of the pot on average and A6s takes the other 32.71%. ## ATo against A6s: the numbers **Exact preflop results for ATo against A6s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | ATo | 62.381 | 9.815 | 27.804 | 67.288 | | A6s | 27.804 | 9.815 | 62.381 | 32.712 | ATo is an offsuit hand and A6s is a suited hand. 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. That is a clear edge, 67.29% to 32.71%, but A6s still wins often enough that one hand proves nothing. Ties are 9.82% of the outcomes here; each tied board gives both hands half the pot. In the ranking of all 169 starting hands, ATo is number 19 and A6s is number 31. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | ATo | 38,453,000 | 6,050,000 | 17,139,000 | | A6s | 17,139,000 | 6,050,000 | 38,453,000 | 36 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. **ATo against A6s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | ATo | 2.057 | 1.603 | 3.597 | 0.486 | | A6s | 0.486 | 3.597 | 1.603 | 2.057 | 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 The flop changes the picture. ATo does best on rainbow flops topped by a ten or better, at 74.39%, and worst on low rainbow flops (nine high or lower), at 56.85%. ATo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **ATo against A6s by flop texture, in percent** | Flop | Share of flops | ATo wins | Ties | A6s wins | ATo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.905 | 70.203 | 8.381 | 21.416 | 74.393 | | Rainbow, nine or lower | 7.042 | 55.521 | 2.660 | 41.819 | 56.851 | | Two-tone | 46.527 | 63.361 | 6.695 | 29.944 | 66.709 | | Monotone | 5.192 | 59.315 | 7.242 | 33.443 | 62.936 | | Paired | 17.334 | 52.666 | 23.844 | 23.490 | 64.588 | 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 ATo 62.72% and A6s 59.91%. Against each other the change is +4.57 points for ATo and -27.20 for A6s. **ATo and A6s 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 | | --- | --- | --- | --- | --- | | ATo, all flops | 67.288 | 62.722 | +4.566 | 1.07280 | | ATo, rainbow, ten or higher | 74.393 | 62.722 | +11.671 | 1.18608 | | ATo, rainbow, nine or lower | 56.851 | 62.722 | -5.871 | 0.90640 | | ATo, two-tone | 66.709 | 62.722 | +3.987 | 1.06357 | | ATo, monotone | 62.936 | 62.722 | +0.214 | 1.00341 | | ATo, paired | 64.588 | 62.722 | +1.866 | 1.02975 | | A6s, all flops | 32.712 | 59.906 | -27.194 | 0.54606 | | A6s, rainbow, ten or higher | 25.607 | 59.906 | -34.299 | 0.42745 | | A6s, rainbow, nine or lower | 43.149 | 59.906 | -16.757 | 0.72028 | | A6s, two-tone | 33.291 | 59.906 | -26.615 | 0.55572 | | A6s, monotone | 37.064 | 59.906 | -22.842 | 0.61870 | | A6s, paired | 35.412 | 59.906 | -24.494 | 0.59113 | ## Does a shared suit matter? Does suit overlap move the numbers? ATo has 68.10% when the hands share a suit and 66.88% when they do not. ATo does better with a shared suit, by 1.22 points. **ATo against A6s by suit overlap, in percent** | Deals | Specific deals | Share of deals | ATo wins | Ties | A6s wins | ATo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 63.128 | 9.939 | 26.933 | 68.097 | | No shared suit | 24 | 66.67 | 62.007 | 9.753 | 28.240 | 66.884 | ## How often this matchup comes up How often does it happen? 36 of the 1,624,350 ordered deals (0.0022%) are ATo against A6s, and 72 (0.0044%) if either hand may sit in either seat. ## A worked example Put $100 each into a $200 pot and deal every board once: ATo averages $134.58 back, ahead of its $100 by $34.58, while A6s averages $65.42, short of its $100 by $34.58. A thousand deals look like this: ATo takes 624, A6s takes 278, 98 are ties. ## The same matchup from the other side The reversed view, A6s against ATo, shows 32.71% for A6s and 67.29% for ATo. It is the same count, so it redirects here. ## Keep exploring Open the calculator with AsTh against Ad6d 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 AsTh against Ad6d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsTh&p2=Ad6d) - [ATo combos](https://georgelipoker.com/combos/ato.md) - [A6s combos](https://georgelipoker.com/combos/a6s.md) - [ATo vs KTo](https://georgelipoker.com/equity/ato-vs-kto.md) - [ATo vs QTs](https://georgelipoker.com/equity/ato-vs-qts.md) - [KJs vs A6s](https://georgelipoker.com/equity/kjs-vs-a6s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 36 specific ATo against A6s deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [ATo vs KTo: preflop equity](https://georgelipoker.com/equity/ato-vs-kto.md) - [ATo vs QTs: preflop equity](https://georgelipoker.com/equity/ato-vs-qts.md) - [KJs vs A6s: preflop equity](https://georgelipoker.com/equity/kjs-vs-a6s.md)