--- title: "AKs vs A2s: preflop equity" url: "https://georgelipoker.com/equity/aks-vs-a2s.md" canonical_url: "https://georgelipoker.com/equity/aks-vs-a2s" last_updated: "2026-10-23" type: "reference" summary: "AKs is a big favorite over A2s before the flop: 71.10% to 28.90% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aks-vs-qto.md", "https://georgelipoker.com/equity/aks-vs-44.md", "https://georgelipoker.com/equity/77-vs-a2s.md"] --- # AKs vs A2s: preflop equity AKs is a big favorite over A2s before the flop: 71.10% to 28.90% equity, counted exactly over every board, with the split by flop type and suit. If AKs and A2s get all the chips in before the flop, AKs owns 71.10% of the pot in the long run and A2s owns 28.90%. ## AKs against A2s: the numbers **Exact preflop results for AKs against A2s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AKs | 68.861 | 4.486 | 26.653 | 71.104 | | A2s | 26.653 | 4.486 | 68.861 | 28.896 | This is a contest between two suited hands, AKs and A2s. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing. That is a clear edge, 71.10% to 28.90%, but A2s still wins often enough that one hand proves nothing. 4.49% of boards are ties, so the equity of each hand is its win rate plus half of that. For context, AKs sits at number 8 of 169 starting hands and A2s at number 46 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 | | --- | --- | --- | --- | | AKs | 14,149,000 | 922,000 | 5,477,000 | | A2s | 5,477,000 | 922,000 | 14,149,000 | 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. **AKs against A2s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AKs | 2.461 | 1.452 | 3.752 | 0.406 | | A2s | 0.406 | 3.752 | 1.452 | 2.461 | 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, AKs' equity runs from 58.00% on low rainbow flops (nine high or lower) up to 77.58% on rainbow flops topped by a ten or better. AKs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AKs against A2s by flop texture, in percent** | Flop | Share of flops | AKs wins | Ties | A2s wins | AKs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 76.361 | 2.429 | 21.210 | 77.576 | | Rainbow, nine or lower | 7.042 | 55.755 | 4.483 | 39.762 | 57.997 | | Two-tone | 46.543 | 68.952 | 2.601 | 28.447 | 70.252 | | Monotone | 5.215 | 62.378 | 4.603 | 33.019 | 64.680 | | Paired | 17.333 | 65.564 | 12.348 | 22.088 | 71.738 | 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 Compared with a random opponent, this matchup shifts AKs from 67.05% by +4.05 points and A2s from 57.38% by -28.48 points. **AKs and A2s 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 | | --- | --- | --- | --- | --- | | AKs, all flops | 71.104 | 67.045 | +4.059 | 1.06054 | | AKs, rainbow, ten or higher | 77.576 | 67.045 | +10.531 | 1.15707 | | AKs, rainbow, nine or lower | 57.997 | 67.045 | -9.048 | 0.86505 | | AKs, two-tone | 70.252 | 67.045 | +3.207 | 1.04783 | | AKs, monotone | 64.680 | 67.045 | -2.365 | 0.96473 | | AKs, paired | 71.738 | 67.045 | +4.693 | 1.07000 | | A2s, all flops | 28.896 | 57.379 | -28.483 | 0.50360 | | A2s, rainbow, ten or higher | 22.424 | 57.379 | -34.955 | 0.39080 | | A2s, rainbow, nine or lower | 42.003 | 57.379 | -15.376 | 0.73203 | | A2s, two-tone | 29.748 | 57.379 | -27.631 | 0.51845 | | A2s, monotone | 35.320 | 57.379 | -22.059 | 0.61556 | | A2s, paired | 28.262 | 57.379 | -29.117 | 0.49255 | ## Does a shared suit matter? Every legal deal of AKs against A2s leaves the hands with no suit in common, so the suit split does not apply here. **AKs against A2s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AKs wins | Ties | A2s wins | AKs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 68.861 | 4.486 | 26.653 | 71.104 | ## How often this matchup comes up You will meet this exact matchup 0.0015% of the time in a random heads-up deal: 24 of 1,624,350, counting either seat order. ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says AKs gets $142.20 of it on average and A2s gets $57.80. Scaled to 1,000 deals, that is roughly 689 wins for AKs, 266 for A2s and 45 chopped pots. ## The same matchup from the other side A2s against AKs adds nothing new: it is 28.90% for A2s and 71.10% for AKs, the same figures reversed. ## Keep exploring The calculator link fills in AsKs against Ah2h, 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 AsKs against Ah2h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsKs&p2=Ah2h) - [AKs combos](https://georgelipoker.com/combos/aks.md) - [A2s combos](https://georgelipoker.com/combos/a2s.md) - [AKs vs QTo](https://georgelipoker.com/equity/aks-vs-qto.md) - [AKs vs 44](https://georgelipoker.com/equity/aks-vs-44.md) - [77 vs A2s](https://georgelipoker.com/equity/77-vs-a2s.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 - [AKs vs QTo: preflop equity](https://georgelipoker.com/equity/aks-vs-qto.md) - [AKs vs 44: preflop equity](https://georgelipoker.com/equity/aks-vs-44.md) - [77 vs A2s: preflop equity](https://georgelipoker.com/equity/77-vs-a2s.md)