--- title: "ATs vs 43s: preflop equity" url: "https://georgelipoker.com/equity/ats-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/ats-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "ATs is a big favorite over 43s before the flop: 63.19% to 36.81% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aqo-vs-43s.md", "https://georgelipoker.com/equity/ats-vs-53s.md", "https://georgelipoker.com/equity/ako-vs-43s.md"] --- # ATs vs 43s: preflop equity ATs is a big favorite over 43s before the flop: 63.19% to 36.81% equity, counted exactly over every board, with the split by flop type and suit. If ATs and 43s get all the chips in before the flop, ATs owns 63.19% of the pot in the long run and 43s owns 36.81%. ## ATs against 43s: the numbers **Exact preflop results for ATs against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | ATs | 62.910 | 0.560 | 36.530 | 63.190 | | 43s | 36.530 | 0.560 | 62.910 | 36.810 | Both hands are suited hands: ATs and 43s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. That is a modest edge, the kind that shows up over many hands and is easy to miss in one. Ties are part of the picture: 0.56% of boards end in a split pot, and each side counts that as half a win. Place 13 of 169 belongs to ATs and place 150 belongs to 43s in the ranking against a random hand. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | ATs | 17,235,000 | 153,000 | 10,008,000 | | 43s | 10,008,000 | 153,000 | 17,235,000 | 16 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 43s 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 | 1.717 | 1.590 | 2.737 | 0.583 | | 43s | 0.583 | 2.737 | 1.590 | 1.717 | 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 ATs prefers rainbow flops topped by a ten or better, where it holds 69.54%, and likes low rainbow flops (nine high or lower) least, where it holds 39.16%. Watch for low rainbow flops (nine high or lower): on those flops 43s holds the better equity. **ATs against 43s by flop texture, in percent** | Flop | Share of flops | ATs wins | Ties | 43s wins | ATs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 69.422 | 0.227 | 30.351 | 69.536 | | Rainbow, nine or lower | 6.314 | 38.765 | 0.796 | 60.439 | 39.163 | | Two-tone | 46.727 | 62.204 | 0.312 | 37.484 | 62.360 | | Monotone | 5.273 | 58.377 | 3.651 | 37.972 | 60.203 | | Paired | 17.091 | 65.789 | 0.678 | 33.533 | 66.128 | Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank. ## Compared with a random hand Relative to a random opponent, ATs changes by -1.41 points (baseline 64.60%) and 43s by -1.83 points (baseline 38.64%). **ATs and 43s 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 | 63.190 | 64.602 | -1.412 | 0.97814 | | ATs, rainbow, ten or higher | 69.536 | 64.602 | +4.934 | 1.07638 | | ATs, rainbow, nine or lower | 39.163 | 64.602 | -25.439 | 0.60622 | | ATs, two-tone | 62.360 | 64.602 | -2.242 | 0.96530 | | ATs, monotone | 60.203 | 64.602 | -4.399 | 0.93191 | | ATs, paired | 66.128 | 64.602 | +1.526 | 1.02362 | | 43s, all flops | 36.810 | 38.642 | -1.832 | 0.95259 | | 43s, rainbow, ten or higher | 30.464 | 38.642 | -8.178 | 0.78836 | | 43s, rainbow, nine or lower | 60.837 | 38.642 | +22.195 | 1.57438 | | 43s, two-tone | 37.640 | 38.642 | -1.002 | 0.97407 | | 43s, monotone | 39.797 | 38.642 | +1.155 | 1.02989 | | 43s, paired | 33.872 | 38.642 | -4.770 | 0.87656 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, ATs has 65.54%; looking only at deals where they do not, 62.41%. ATs does better with a shared suit, by 3.13 points. **ATs against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | ATs wins | Ties | 43s wins | ATs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 65.222 | 0.635 | 34.143 | 65.540 | | No shared suit | 12 | 75.00 | 62.140 | 0.535 | 37.325 | 62.407 | ## How often this matchup comes up You will meet this exact matchup 0.0020% of the time in a random heads-up deal: 32 of 1,624,350, counting either seat order. ## A worked example Put $100 each into a $200 pot and deal every board once: ATs averages $126.38 back, ahead of its $100 by $26.38, while 43s averages $73.62, short of its $100 by $26.38. Scaled to 1,000 deals, that is roughly 629 wins for ATs, 365 for 43s and 6 chopped pots. ## The same matchup from the other side One page covers both views. From 43s' side the equity is 36.81%, and from ATs' side it is 63.19%. ## Keep exploring Open the calculator with AsTs against 4h3h 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 AsTs against 4h3h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsTs&p2=4h3h) - [ATs combos](https://georgelipoker.com/combos/ats.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [AQo vs 43s](https://georgelipoker.com/equity/aqo-vs-43s.md) - [ATs vs 53s](https://georgelipoker.com/equity/ats-vs-53s.md) - [AKo vs 43s](https://georgelipoker.com/equity/ako-vs-43s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 16 specific ATs against 43s 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 - [AQo vs 43s: preflop equity](https://georgelipoker.com/equity/aqo-vs-43s.md) - [ATs vs 53s: preflop equity](https://georgelipoker.com/equity/ats-vs-53s.md) - [AKo vs 43s: preflop equity](https://georgelipoker.com/equity/ako-vs-43s.md)