--- title: "ATs vs AJo: preflop equity" url: "https://georgelipoker.com/equity/ats-vs-ajo.md" canonical_url: "https://georgelipoker.com/equity/ats-vs-ajo" last_updated: "2026-10-23" type: "reference" summary: "AJo is a big favorite over ATs before the flop: 68.68% to 31.33% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ats-vs-kqs.md", "https://georgelipoker.com/equity/ats-vs-66.md", "https://georgelipoker.com/equity/aqo-vs-ajo.md"] --- # ATs vs AJo: preflop equity AJo is a big favorite over ATs before the flop: 68.68% to 31.33% equity, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, AJo takes 68.67% of the pot on average and ATs takes the other 31.33%. ## ATs against AJo: the numbers **Exact preflop results for ATs against AJo, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | ATs | 27.493 | 7.664 | 64.843 | 31.325 | | AJo | 64.843 | 7.664 | 27.493 | 68.675 | ATs is a suited hand and AJo is 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. AJo is the clear favorite, though ATs gets there on roughly one board in 3. The tie share is 7.66%: on those boards the pot is chopped and neither hand wins outright. ATs ranks number 13 of 169 starting hands, and AJo ranks number 15, by equity against a random hand. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | ATs | 16,947,000 | 4,724,000 | 39,971,000 | | AJo | 39,971,000 | 4,724,000 | 16,947,000 | 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. **ATs against AJo read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | ATs | 0.456 | 3.637 | 1.542 | 2.192 | | AJo | 2.192 | 1.542 | 3.637 | 0.456 | 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 Low rainbow flops (nine high or lower) are the best for AJo (80.61%); monotone flops are the worst (63.83%). AJo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **ATs against AJo by flop texture, in percent** | Flop | Share of flops | ATs wins | Ties | AJo wins | ATs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.177 | 28.440 | 5.544 | 66.016 | 31.212 | | Rainbow, nine or lower | 7.771 | 16.860 | 5.058 | 78.082 | 19.389 | | Two-tone | 46.527 | 29.456 | 5.123 | 65.421 | 32.017 | | Monotone | 5.192 | 33.186 | 5.974 | 60.840 | 36.173 | | Paired | 17.333 | 24.021 | 18.992 | 56.987 | 33.517 | 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 Against one random hand instead, ATs holds 64.60% and AJo holds 63.56%. Facing each other changes that by -33.27 points for ATs and +5.11 points for AJo. **ATs and AJo 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 | | --- | --- | --- | --- | --- | | ATs, all flops | 31.325 | 64.602 | -33.277 | 0.48489 | | ATs, rainbow, ten or higher | 31.212 | 64.602 | -33.390 | 0.48314 | | ATs, rainbow, nine or lower | 19.389 | 64.602 | -45.213 | 0.30013 | | ATs, two-tone | 32.017 | 64.602 | -32.585 | 0.49560 | | ATs, monotone | 36.173 | 64.602 | -28.429 | 0.55994 | | ATs, paired | 33.517 | 64.602 | -31.085 | 0.51882 | | AJo, all flops | 68.675 | 63.563 | +5.112 | 1.08042 | | AJo, rainbow, ten or higher | 68.788 | 63.563 | +5.225 | 1.08220 | | AJo, rainbow, nine or lower | 80.611 | 63.563 | +17.048 | 1.26821 | | AJo, two-tone | 67.983 | 63.563 | +4.420 | 1.06954 | | AJo, monotone | 63.827 | 63.563 | +0.264 | 1.00415 | | AJo, paired | 66.483 | 63.563 | +2.920 | 1.04594 | ## Does a shared suit matter? Split by suits, the deals give AJo 69.42% when the hands overlap in a suit and 68.31% when they do not. AJo does better with a shared suit, by 1.11 points. **ATs against AJo by suit overlap, in percent** | Deals | Specific deals | Share of deals | ATs wins | Ties | AJo wins | ATs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 33.33 | 26.703 | 7.761 | 65.536 | 30.584 | | No shared suit | 24 | 66.67 | 27.888 | 7.615 | 64.497 | 31.695 | ## How often this matchup comes up How often does it happen? 36 of the 1,624,350 ordered deals (0.0022%) are ATs against AJo, and 72 (0.0044%) if either hand may sit in either seat. ## A worked example To see what the equity is worth, imagine $100 each in a $200 pot. AJo is worth $137.34 on average (+$37.34); ATs is worth $62.66 (-$37.34). Scaled to 1,000 deals, that is roughly 648 wins for AJo, 275 for ATs and 77 chopped pots. ## The same matchup from the other side Read it from the other side: AJo against ATs is the same matchup with the numbers swapped, so AJo holds 68.67% and ATs holds 31.33%. That address sends you back to this page. ## Keep exploring The calculator link fills in AsTs against AhJd, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength. - [Open AsTs against AhJd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsTs&p2=AhJd) - [ATs combos](https://georgelipoker.com/combos/ats.md) - [AJo combos](https://georgelipoker.com/combos/ajo.md) - [ATs vs KQs](https://georgelipoker.com/equity/ats-vs-kqs.md) - [ATs vs 66](https://georgelipoker.com/equity/ats-vs-66.md) - [AQo vs AJo](https://georgelipoker.com/equity/aqo-vs-ajo.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Method: exact enumeration. The 36 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [ATs vs KQs: preflop equity](https://georgelipoker.com/equity/ats-vs-kqs.md) - [ATs vs 66: preflop equity](https://georgelipoker.com/equity/ats-vs-66.md) - [AQo vs AJo: preflop equity](https://georgelipoker.com/equity/aqo-vs-ajo.md)