--- title: "KK vs A3s: preflop equity" url: "https://georgelipoker.com/equity/kk-vs-a3s.md" canonical_url: "https://georgelipoker.com/equity/kk-vs-a3s" last_updated: "2026-10-23" type: "reference" summary: "KK is a big favorite over A3s before the flop: 67.39% to 32.61% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kk-vs-qjo.md", "https://georgelipoker.com/equity/kk-vs-k9o.md", "https://georgelipoker.com/equity/qq-vs-a3s.md"] --- # KK vs A3s: preflop equity KK is a big favorite over A3s before the flop: 67.39% to 32.61% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts KK at 67.39% and A3s at 32.61% when the two hands see all five board cards. ## KK against A3s: the numbers **Exact preflop results for KK against A3s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KK | 67.159 | 0.459 | 32.382 | 67.389 | | A3s | 32.382 | 0.459 | 67.159 | 32.611 | One side is a pocket pair, the other is a suited hand. One of the other hand's cards outranks the pair and one is below it, which makes this a closer race than a pair against two small cards. That is a clear edge, 67.39% to 32.61%, but A3s still wins often enough that one hand proves nothing. Split pots make up 0.46% of the boards, and both equity figures count them as half a win each. Ranked by equity against a random hand, KK is number 2 of the 169 starting hands and A3s is number 38. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KK | 27,599,000 | 189,000 | 13,307,000 | | A3s | 13,307,000 | 189,000 | 27,599,000 | Exact total: 24 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. **KK against A3s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | KK | 2.066 | 1.489 | 3.088 | 0.484 | | A3s | 0.484 | 3.088 | 1.489 | 2.066 | In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity. ## Who is ahead on which flops By flop texture, KK's equity runs from 62.99% on monotone flops up to 73.97% on low rainbow flops (nine high or lower). KK stays ahead on all five textures. **KK against A3s by flop texture, in percent** | Flop | Share of flops | KK wins | Ties | A3s wins | KK equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 67.167 | 0.198 | 32.635 | 67.266 | | Rainbow, nine or lower | 7.042 | 73.317 | 1.296 | 25.387 | 73.965 | | Two-tone | 46.545 | 65.369 | 0.409 | 34.222 | 65.574 | | Monotone | 5.212 | 61.760 | 2.465 | 35.775 | 62.992 | | Paired | 17.334 | 71.074 | 0.010 | 28.916 | 71.079 | 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 How much does the opponent matter? Compared with its random-hand 82.40%, KK changes by -15.01 points, and A3s, from 58.22%, by -25.61. **KK and A3s 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 | | --- | --- | --- | --- | --- | | KK, all flops | 67.389 | 82.396 | -15.007 | 0.81787 | | KK, rainbow, ten or higher | 67.266 | 82.396 | -15.130 | 0.81637 | | KK, rainbow, nine or lower | 73.965 | 82.396 | -8.431 | 0.89768 | | KK, two-tone | 65.574 | 82.396 | -16.822 | 0.79584 | | KK, monotone | 62.992 | 82.396 | -19.404 | 0.76450 | | KK, paired | 71.079 | 82.396 | -11.317 | 0.86265 | | A3s, all flops | 32.611 | 58.220 | -25.609 | 0.56013 | | A3s, rainbow, ten or higher | 32.734 | 58.220 | -25.486 | 0.56225 | | A3s, rainbow, nine or lower | 26.035 | 58.220 | -32.185 | 0.44718 | | A3s, two-tone | 34.426 | 58.220 | -23.794 | 0.59131 | | A3s, monotone | 37.008 | 58.220 | -21.212 | 0.63566 | | A3s, paired | 28.921 | 58.220 | -29.299 | 0.49675 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, KK has 67.68%; looking only at deals where they do not, 67.10%. KK does better with a shared suit, by 0.58 points. **KK against A3s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KK wins | Ties | A3s wins | KK equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 67.428 | 0.500 | 32.072 | 67.678 | | No shared suit | 12 | 50.00 | 66.890 | 0.418 | 32.692 | 67.099 | ## How often this matchup comes up Exactly 24 specific deals fit this matchup in one seat order, which is 0.0015% of 1,624,350; both orders together give 48, or 0.0030%. ## A worked example Try it with money: two players each put in $100 and the whole board runs out every possible way. KK averages $134.78 from the $200, up $34.78; A3s averages $65.22, down $34.78. Over a long run, 1,000 deals split into about 672 for KK, 324 for A3s and 4 tied. ## The same matchup from the other side A3s against KK adds nothing new: it is 32.61% for A3s and 67.39% for KK, the same figures reversed. ## Keep exploring KsKh against Ad3d is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open KsKh against Ad3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsKh&p2=Ad3d) - [KK combos](https://georgelipoker.com/combos/kk.md) - [A3s combos](https://georgelipoker.com/combos/a3s.md) - [KK vs QJo](https://georgelipoker.com/equity/kk-vs-qjo.md) - [KK vs K9o](https://georgelipoker.com/equity/kk-vs-k9o.md) - [QQ vs A3s](https://georgelipoker.com/equity/qq-vs-a3s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 24 specific KK against A3s 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 - [KK vs QJo: preflop equity](https://georgelipoker.com/equity/kk-vs-qjo.md) - [KK vs K9o: preflop equity](https://georgelipoker.com/equity/kk-vs-k9o.md) - [QQ vs A3s: preflop equity](https://georgelipoker.com/equity/qq-vs-a3s.md)