--- title: "KK vs AJs: preflop equity" url: "https://georgelipoker.com/equity/kk-vs-ajs.md" canonical_url: "https://georgelipoker.com/equity/kk-vs-ajs" last_updated: "2026-10-23" type: "reference" summary: "KK is a big favorite over AJs before the flop: 67.79% to 32.21% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kk-vs-ako.md", "https://georgelipoker.com/equity/kk-vs-ats.md", "https://georgelipoker.com/equity/qq-vs-ajs.md"] --- # KK vs AJs: preflop equity KK is a big favorite over AJs before the flop: 67.79% to 32.21% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 67.79% for KK and 32.21% for AJs, so KK leads by 35.58 points. ## KK against AJs: the numbers **Exact preflop results for KK against AJs, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KK | 67.581 | 0.423 | 31.996 | 67.793 | | AJs | 31.996 | 0.423 | 67.581 | 32.207 | One side is a pocket pair, the other is a suited hand. The pair is ahead of one card and behind the other, so the board decides how that plays out. KK is well ahead, and AJs needs a specific kind of board to catch up. About 0.42% of boards chop the pot, which is why equity sits slightly above the win figure for both hands. The hand ranking puts KK at 2 and AJs at 11 out of 169 starting hands. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KK | 27,773,000 | 174,000 | 13,149,000 | | AJs | 13,149,000 | 174,000 | 27,773,000 | 24 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. **KK against AJs 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 | 2.105 | 1.480 | 3.125 | 0.475 | | AJs | 0.475 | 3.125 | 1.480 | 2.105 | 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 Across the five flop textures KK's equity moves by 18.35 points, from 63.13% on monotone flops to 81.48% on low rainbow flops (nine high or lower). KK stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **KK against AJs by flop texture, in percent** | Flop | Share of flops | KK wins | Ties | AJs wins | KK equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.138 | 64.947 | 0.132 | 34.921 | 65.013 | | Rainbow, nine or lower | 7.771 | 80.877 | 1.209 | 17.914 | 81.482 | | Two-tone | 46.545 | 65.715 | 0.365 | 33.920 | 65.897 | | Monotone | 5.212 | 61.912 | 2.431 | 35.657 | 63.127 | | Paired | 17.334 | 71.853 | 0.010 | 28.137 | 71.858 | 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 A random hand would give KK 82.40% and AJs 65.39%. Against each other the change is -14.61 points for KK and -33.18 for AJs. **KK and AJs 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 | 67.793 | 82.396 | -14.603 | 0.82277 | | KK, rainbow, ten or higher | 65.013 | 82.396 | -17.383 | 0.78903 | | KK, rainbow, nine or lower | 81.482 | 82.396 | -0.914 | 0.98891 | | KK, two-tone | 65.897 | 82.396 | -16.499 | 0.79976 | | KK, monotone | 63.127 | 82.396 | -19.269 | 0.76614 | | KK, paired | 71.858 | 82.396 | -10.538 | 0.87211 | | AJs, all flops | 32.207 | 65.393 | -33.186 | 0.49251 | | AJs, rainbow, ten or higher | 34.987 | 65.393 | -30.406 | 0.53503 | | AJs, rainbow, nine or lower | 18.518 | 65.393 | -46.875 | 0.28318 | | AJs, two-tone | 34.103 | 65.393 | -31.290 | 0.52151 | | AJs, monotone | 36.873 | 65.393 | -28.520 | 0.56387 | | AJs, paired | 28.142 | 65.393 | -37.251 | 0.43035 | ## Does a shared suit matter? When the hands share a suit, KK holds 68.06%; when they do not, it holds 67.52%. KK does better with a shared suit, by 0.54 points. **KK against AJs by suit overlap, in percent** | Deals | Specific deals | Share of deals | KK wins | Ties | AJs wins | KK equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 67.832 | 0.463 | 31.705 | 68.064 | | No shared suit | 12 | 50.00 | 67.331 | 0.382 | 32.287 | 67.522 | ## How often this matchup comes up The class pair covers 24 combinations of specific cards in a fixed seat order, 0.0015% of 1,624,350, and 48 (0.0030%) in either order. ## A worked example With $100 from each side, the $200 pot is split on average as $135.58 for KK and $64.42 for AJs; the first side gains $35.58 per all-in and the second gives up $35.58. Per 1,000 deals: KK wins about 676, AJs wins about 320, and about 4 end in a split pot. ## The same matchup from the other side If you came looking for AJs against KK, the numbers are the same with the hands swapped: 32.21% and 67.79%. ## Keep exploring Try KsKh against AdJd 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 KsKh against AdJd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsKh&p2=AdJd) - [KK combos](https://georgelipoker.com/combos/kk.md) - [AJs combos](https://georgelipoker.com/combos/ajs.md) - [KK vs AKo](https://georgelipoker.com/equity/kk-vs-ako.md) - [KK vs ATs](https://georgelipoker.com/equity/kk-vs-ats.md) - [QQ vs AJs](https://georgelipoker.com/equity/qq-vs-ajs.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 24 deals of KK against AJs 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 - [KK vs AKo: preflop equity](https://georgelipoker.com/equity/kk-vs-ako.md) - [KK vs ATs: preflop equity](https://georgelipoker.com/equity/kk-vs-ats.md) - [QQ vs AJs: preflop equity](https://georgelipoker.com/equity/qq-vs-ajs.md)