--- title: "KK vs A5s: preflop equity" url: "https://georgelipoker.com/equity/kk-vs-a5s.md" canonical_url: "https://georgelipoker.com/equity/kk-vs-a5s" last_updated: "2026-10-23" type: "reference" summary: "KK is a big favorite over A5s before the flop: 66.66% to 33.34% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kk-vs-a6s.md", "https://georgelipoker.com/equity/kk-vs-kto.md", "https://georgelipoker.com/equity/qq-vs-a5s.md"] --- # KK vs A5s: preflop equity KK is a big favorite over A5s before the flop: 66.66% to 33.34% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 66.66% for KK and 33.34% for A5s, so KK leads by 33.32 points. ## KK against A5s: the numbers **Exact preflop results for KK against A5s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KK | 66.443 | 0.437 | 33.120 | 66.662 | | A5s | 33.120 | 0.437 | 66.443 | 33.338 | One side is a pocket pair, the other is a suited hand. The pair sits between the other hand's two cards: one is higher and one is lower, so the pair is exposed to the higher card. KK is the clear favorite, though A5s gets there on roughly one board in 3. Split pots make up 0.44% of the boards, and both equity figures count them as half a win each. Among the 169 starting hands, KK is number 2 and A5s is number 30 by strength against a random hand. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KK | 27,305,000 | 180,000 | 13,611,000 | | A5s | 13,611,000 | 180,000 | 27,305,000 | 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 A5s 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 | 2.000 | 1.505 | 3.019 | 0.500 | | A5s | 0.500 | 3.019 | 1.505 | 2.000 | 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, KK's equity runs from 62.45% on monotone flops up to 71.15% on low rainbow flops (nine high or lower). KK stays ahead on all five textures. **KK against A5s by flop texture, in percent** | Flop | Share of flops | KK wins | Ties | A5s wins | KK equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 66.845 | 0.198 | 32.957 | 66.944 | | Rainbow, nine or lower | 7.042 | 70.567 | 1.155 | 28.278 | 71.145 | | Two-tone | 46.545 | 64.581 | 0.384 | 35.035 | 64.773 | | Monotone | 5.212 | 61.222 | 2.453 | 36.325 | 62.448 | | Paired | 17.334 | 70.786 | 0.010 | 29.204 | 70.791 | 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 -15.74 points, and A5s, from 59.92%, by -26.58. **KK and A5s 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 | 66.662 | 82.396 | -15.734 | 0.80904 | | KK, rainbow, ten or higher | 66.944 | 82.396 | -15.452 | 0.81247 | | KK, rainbow, nine or lower | 71.145 | 82.396 | -11.251 | 0.86345 | | KK, two-tone | 64.773 | 82.396 | -17.623 | 0.78612 | | KK, monotone | 62.448 | 82.396 | -19.948 | 0.75790 | | KK, paired | 70.791 | 82.396 | -11.605 | 0.85916 | | A5s, all flops | 33.338 | 59.923 | -26.585 | 0.55635 | | A5s, rainbow, ten or higher | 33.056 | 59.923 | -26.867 | 0.55164 | | A5s, rainbow, nine or lower | 28.855 | 59.923 | -31.068 | 0.48153 | | A5s, two-tone | 35.227 | 59.923 | -24.696 | 0.58787 | | A5s, monotone | 37.552 | 59.923 | -22.371 | 0.62667 | | A5s, paired | 29.209 | 59.923 | -30.714 | 0.48744 | ## Does a shared suit matter? When the hands share a suit, KK holds 66.94%; when they do not, it holds 66.38%. KK does better with a shared suit, by 0.56 points. **KK against A5s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KK wins | Ties | A5s wins | KK equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 66.704 | 0.478 | 32.818 | 66.943 | | No shared suit | 12 | 50.00 | 66.183 | 0.396 | 33.421 | 66.381 | ## 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 $133.32 from the $200, up $33.32; A5s averages $66.68, down $33.32. Run 1,000 deals and the tally comes out near 665 for KK, 331 for A5s and 4 ties. ## The same matchup from the other side If you came looking for A5s against KK, the numbers are the same with the hands swapped: 33.34% and 66.66%. ## Keep exploring Try KsKh against Ad5d 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 Ad5d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsKh&p2=Ad5d) - [KK combos](https://georgelipoker.com/combos/kk.md) - [A5s combos](https://georgelipoker.com/combos/a5s.md) - [KK vs A6s](https://georgelipoker.com/equity/kk-vs-a6s.md) - [KK vs KTo](https://georgelipoker.com/equity/kk-vs-kto.md) - [QQ vs A5s](https://georgelipoker.com/equity/qq-vs-a5s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed This is an exact count with no sampling. For the 24 ways to deal one KK and one A5s without reusing a card, grouped by suit pattern, every one of the 1,712,304 possible boards is dealt and both seven-card hands are compared. A tie counts as half a win in the equity column, and each board is counted once under each of its ten three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [KK vs A6s: preflop equity](https://georgelipoker.com/equity/kk-vs-a6s.md) - [KK vs KTo: preflop equity](https://georgelipoker.com/equity/kk-vs-kto.md) - [QQ vs A5s: preflop equity](https://georgelipoker.com/equity/qq-vs-a5s.md)