--- title: "KTo vs A2s: preflop equity" url: "https://georgelipoker.com/equity/kto-vs-a2s.md" canonical_url: "https://georgelipoker.com/equity/kto-vs-a2s" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, KTo or A2s? A2s leads 59.38% to 40.62% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kto-vs-qto.md", "https://georgelipoker.com/equity/kto-vs-44.md", "https://georgelipoker.com/equity/qts-vs-a2s.md"] --- # KTo vs A2s: preflop equity Who is ahead, KTo or A2s? A2s leads 59.38% to 40.62% before the flop, counted exactly over every board, with the split by flop type and suit. Over all 1,712,304 boards that can follow this deal, A2s finishes with 59.38% of the pot and KTo with 40.62%. ## KTo against A2s: the numbers **Exact preflop results for KTo against A2s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KTo | 40.372 | 0.503 | 59.125 | 40.623 | | A2s | 59.125 | 0.503 | 40.372 | 59.377 | We compare an offsuit hand with a suited hand. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits. A2s is ahead, but KTo is far from dead: it takes 404 of every 1,000 deals outright. Split pots make up 0.50% of the boards, and both equity figures count them as half a win each. Place 33 of 169 belongs to KTo and place 46 belongs to A2s in the ranking against a random hand. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KTo | 33,182,000 | 413,000 | 48,595,000 | | A2s | 48,595,000 | 413,000 | 33,182,000 | Exact total: 48 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate. **KTo 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) | | --- | --- | --- | --- | --- | | KTo | 0.684 | 2.477 | 1.691 | 1.462 | | A2s | 1.462 | 1.691 | 2.477 | 0.684 | 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 A2s prefers low rainbow flops (nine high or lower), where it holds 75.69%, and likes rainbow flops topped by a ten or better least, where it holds 51.95%. A2s stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **KTo against A2s by flop texture, in percent** | Flop | Share of flops | KTo wins | Ties | A2s wins | KTo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.988 | 47.969 | 0.169 | 51.862 | 48.054 | | Rainbow, nine or lower | 7.042 | 23.797 | 1.025 | 75.178 | 24.309 | | Two-tone | 46.667 | 40.837 | 0.332 | 58.831 | 41.003 | | Monotone | 5.212 | 42.657 | 2.412 | 54.931 | 43.863 | | Paired | 17.091 | 34.568 | 0.645 | 64.787 | 34.891 | 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 KTo from 59.74% by -19.12 points and A2s from 57.38% by +2.00 points. **KTo 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 | | --- | --- | --- | --- | --- | | KTo, all flops | 40.623 | 59.739 | -19.116 | 0.68001 | | KTo, rainbow, ten or higher | 48.054 | 59.739 | -11.685 | 0.80440 | | KTo, rainbow, nine or lower | 24.309 | 59.739 | -35.430 | 0.40692 | | KTo, two-tone | 41.003 | 59.739 | -18.736 | 0.68637 | | KTo, monotone | 43.863 | 59.739 | -15.876 | 0.73424 | | KTo, paired | 34.891 | 59.739 | -24.848 | 0.58406 | | A2s, all flops | 59.377 | 57.379 | +1.998 | 1.03482 | | A2s, rainbow, ten or higher | 51.946 | 57.379 | -5.433 | 0.90531 | | A2s, rainbow, nine or lower | 75.691 | 57.379 | +18.312 | 1.31914 | | A2s, two-tone | 58.997 | 57.379 | +1.618 | 1.02820 | | A2s, monotone | 56.137 | 57.379 | -1.242 | 0.97835 | | A2s, paired | 65.109 | 57.379 | +7.730 | 1.13472 | ## Does a shared suit matter? Split by suits, the deals give A2s 59.03% when the hands overlap in a suit and 59.72% when they do not. A2s does better with no shared suit, by 0.69 points. **KTo against A2s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KTo wins | Ties | A2s wins | KTo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 40.694 | 0.545 | 58.761 | 40.967 | | No shared suit | 24 | 50.00 | 40.049 | 0.461 | 59.490 | 40.280 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 48 are KTo in one seat and A2s in the other (0.0030%); with the seats swapped too, 96 (0.0059%). ## A worked example With $100 from each side, the $200 pot is split on average as $118.76 for A2s and $81.24 for KTo; the first side gains $18.76 per all-in and the second gives up $18.76. Think in thousands: about 591 of 1,000 go to A2s, about 404 go to KTo, and about 5 are chopped. ## The same matchup from the other side Read it from the other side: A2s against KTo is the same matchup with the numbers swapped, so A2s holds 59.38% and KTo holds 40.62%. That address sends you back to this page. ## Keep exploring Try KsTh against Ad2d 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 KsTh against Ad2d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsTh&p2=Ad2d) - [KTo combos](https://georgelipoker.com/combos/kto.md) - [A2s combos](https://georgelipoker.com/combos/a2s.md) - [KTo vs QTo](https://georgelipoker.com/equity/kto-vs-qto.md) - [KTo vs 44](https://georgelipoker.com/equity/kto-vs-44.md) - [QTs vs A2s](https://georgelipoker.com/equity/qts-vs-a2s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 48 deals of KTo against A2s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [KTo vs QTo: preflop equity](https://georgelipoker.com/equity/kto-vs-qto.md) - [KTo vs 44: preflop equity](https://georgelipoker.com/equity/kto-vs-44.md) - [QTs vs A2s: preflop equity](https://georgelipoker.com/equity/qts-vs-a2s.md)