--- title: "AJs vs ATo: preflop equity" url: "https://georgelipoker.com/equity/ajs-vs-ato.md" canonical_url: "https://georgelipoker.com/equity/ajs-vs-ato" last_updated: "2026-10-23" type: "reference" summary: "AJs is a big favorite over ATo before the flop: 73.94% to 26.06% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ajs-vs-kjs.md", "https://georgelipoker.com/equity/ajs-vs-a8s.md", "https://georgelipoker.com/equity/ako-vs-ato.md"] --- # AJs vs ATo: preflop equity AJs is a big favorite over ATo before the flop: 73.94% to 26.06% equity, counted exactly over every board, with the split by flop type and suit. In equity, AJs against ATo stands at 73.94% to 26.06%, a gap of 47.88 points. ## AJs against ATo: the numbers **Exact preflop results for AJs against ATo, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AJs | 70.112 | 7.665 | 22.223 | 73.944 | | ATo | 22.223 | 7.665 | 70.112 | 26.056 | We compare a suited hand with an offsuit 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. AJs is well ahead, and ATo needs a specific kind of board to catch up. Ties are part of the picture: 7.67% of boards end in a split pot, and each side counts that as half a win. By strength against a random hand, AJs holds place 11 of 169 and ATo holds place 19. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AJs | 43,219,000 | 4,725,000 | 13,699,000 | | ATo | 13,699,000 | 4,725,000 | 43,219,000 | The board total is exact, 36 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **AJs against ATo 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 | 2.838 | 1.426 | 4.500 | 0.352 | | ATo | 0.352 | 4.500 | 1.426 | 2.838 | 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 AJs prefers low rainbow flops (nine high or lower), where it holds 84.19%, and likes monotone flops least, where it holds 66.96%. 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 ATo by flop texture, in percent** | Flop | Share of flops | AJs wins | Ties | ATo wins | AJs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.177 | 69.050 | 5.536 | 25.414 | 71.818 | | Rainbow, nine or lower | 7.771 | 81.662 | 5.058 | 13.280 | 84.191 | | Two-tone | 46.527 | 72.379 | 5.128 | 22.493 | 74.943 | | Monotone | 5.192 | 63.960 | 5.989 | 30.051 | 66.955 | | Paired | 17.333 | 62.109 | 18.995 | 18.896 | 71.606 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 65.39%, AJs changes by +8.55 points, and ATo, from 62.72%, by -36.66. **AJs and ATo 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 | 73.944 | 65.393 | +8.551 | 1.13076 | | AJs, rainbow, ten or higher | 71.818 | 65.393 | +6.425 | 1.09825 | | AJs, rainbow, nine or lower | 84.191 | 65.393 | +18.798 | 1.28746 | | AJs, two-tone | 74.943 | 65.393 | +9.550 | 1.14604 | | AJs, monotone | 66.955 | 65.393 | +1.562 | 1.02389 | | AJs, paired | 71.606 | 65.393 | +6.213 | 1.09501 | | ATo, all flops | 26.056 | 62.722 | -36.666 | 0.41542 | | ATo, rainbow, ten or higher | 28.182 | 62.722 | -34.540 | 0.44932 | | ATo, rainbow, nine or lower | 15.809 | 62.722 | -46.913 | 0.25205 | | ATo, two-tone | 25.057 | 62.722 | -37.665 | 0.39949 | | ATo, monotone | 33.045 | 62.722 | -29.677 | 0.52685 | | ATo, paired | 28.394 | 62.722 | -34.328 | 0.45270 | ## Does a shared suit matter? Does suit overlap move the numbers? AJs has 73.73% when the hands share a suit and 74.05% when they do not. AJs does better with no shared suit, by 0.32 points. **AJs against ATo by suit overlap, in percent** | Deals | Specific deals | Share of deals | AJs wins | Ties | ATo wins | AJs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 69.854 | 7.761 | 22.385 | 73.734 | | No shared suit | 24 | 66.67 | 70.240 | 7.618 | 22.142 | 74.049 | ## How often this matchup comes up Counting specific cards, AJs against ATo appears in 36 of the 1,624,350 ordered heads-up deals (0.0022%), and in 72 when the seats are swapped too (0.0044%). ## A worked example With $100 from each side, the $200 pot is split on average as $147.88 for AJs and $52.12 for ATo; the first side gains $47.88 per all-in and the second gives up $47.88. Out of 1,000 deals you should see around 701 outright wins for AJs, 222 for ATo, and 77 split pots. ## The same matchup from the other side One page covers both views. From ATo's side the equity is 26.06%, and from AJs' side it is 73.94%. ## Keep exploring Try AsJs against AhTd in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking. - [Open AsJs against AhTd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsJs&p2=AhTd) - [AJs combos](https://georgelipoker.com/combos/ajs.md) - [ATo combos](https://georgelipoker.com/combos/ato.md) - [AJs vs KJs](https://georgelipoker.com/equity/ajs-vs-kjs.md) - [AJs vs A8s](https://georgelipoker.com/equity/ajs-vs-a8s.md) - [AKo vs ATo](https://georgelipoker.com/equity/ako-vs-ato.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Each figure is a complete count over boards. Take the 36 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 - [AJs vs KJs: preflop equity](https://georgelipoker.com/equity/ajs-vs-kjs.md) - [AJs vs A8s: preflop equity](https://georgelipoker.com/equity/ajs-vs-a8s.md) - [AKo vs ATo: preflop equity](https://georgelipoker.com/equity/ako-vs-ato.md)