--- title: "KJs vs 87s: preflop equity" url: "https://georgelipoker.com/equity/kjs-vs-87s.md" canonical_url: "https://georgelipoker.com/equity/kjs-vs-87s" last_updated: "2026-10-23" type: "reference" summary: "KJs is a big favorite over 87s before the flop: 62.24% to 37.76% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kjs-vs-86s.md", "https://georgelipoker.com/equity/kjs-vs-76s.md", "https://georgelipoker.com/equity/a8s-vs-87s.md"] --- # KJs vs 87s: preflop equity KJs is a big favorite over 87s before the flop: 62.24% to 37.76% equity, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, KJs takes 62.24% of the pot on average and 87s takes the other 37.76%. ## KJs against 87s: the numbers **Exact preflop results for KJs against 87s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KJs | 61.901 | 0.674 | 37.425 | 62.238 | | 87s | 37.425 | 0.674 | 61.901 | 37.762 | This is a contest between two suited hands, KJs and 87s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. A 24.48 point lead is real, and 87s still takes about 374 of every 1,000 deals outright. A split pot comes up on 0.67% of boards, so the wins and the equity differ by half of that. For context, KJs sits at number 20 of 169 starting hands and 87s at number 100 when each is run against a random hand. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KJs | 16,959,000 | 185,000 | 10,253,000 | | 87s | 10,253,000 | 185,000 | 16,959,000 | The board total is exact, 16 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **KJs against 87s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | KJs | 1.648 | 1.615 | 2.672 | 0.607 | | 87s | 0.607 | 2.672 | 1.615 | 1.648 | 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 The flop changes the picture. KJs does best on rainbow flops topped by a ten or better, at 68.89%, and worst on low rainbow flops (nine high or lower), at 37.61%. KJs is the favorite overall but falls behind on low rainbow flops (nine high or lower). **KJs against 87s by flop texture, in percent** | Flop | Share of flops | KJs wins | Ties | 87s wins | KJs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 68.737 | 0.308 | 30.955 | 68.891 | | Rainbow, nine or lower | 6.314 | 37.351 | 0.508 | 62.141 | 37.605 | | Two-tone | 46.727 | 61.462 | 0.321 | 38.217 | 61.622 | | Monotone | 5.273 | 57.848 | 3.459 | 38.693 | 59.578 | | Paired | 17.091 | 63.585 | 1.366 | 35.049 | 64.268 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand Compared with a random opponent, this matchup shifts KJs from 62.57% by -0.33 points and 87s from 47.94% by -10.18 points. **KJs and 87s 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 | | --- | --- | --- | --- | --- | | KJs, all flops | 62.238 | 62.567 | -0.329 | 0.99474 | | KJs, rainbow, ten or higher | 68.891 | 62.567 | +6.324 | 1.10108 | | KJs, rainbow, nine or lower | 37.605 | 62.567 | -24.962 | 0.60104 | | KJs, two-tone | 61.622 | 62.567 | -0.945 | 0.98490 | | KJs, monotone | 59.578 | 62.567 | -2.989 | 0.95223 | | KJs, paired | 64.268 | 62.567 | +1.701 | 1.02719 | | 87s, all flops | 37.762 | 47.936 | -10.174 | 0.78776 | | 87s, rainbow, ten or higher | 31.109 | 47.936 | -16.827 | 0.64897 | | 87s, rainbow, nine or lower | 62.395 | 47.936 | +14.459 | 1.30163 | | 87s, two-tone | 38.378 | 47.936 | -9.558 | 0.80061 | | 87s, monotone | 40.422 | 47.936 | -7.514 | 0.84325 | | 87s, paired | 35.732 | 47.936 | -12.204 | 0.74541 | ## Does a shared suit matter? Looking only at deals where the hands share a suit, KJs has 64.49%; looking only at deals where they do not, 61.49%. KJs does better with a shared suit, by 3.00 points. **KJs against 87s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KJs wins | Ties | 87s wins | KJs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 64.104 | 0.761 | 35.135 | 64.485 | | No shared suit | 12 | 75.00 | 61.167 | 0.645 | 38.188 | 61.489 | ## How often this matchup comes up You will meet this exact matchup 0.0020% of the time in a random heads-up deal: 32 of 1,624,350, counting either seat order. ## A worked example Take a $200 pot built from $100 each. KJs' equity of 62.24% is worth $124.48, a $24.48 edge, and 87s' 37.76% is worth $75.52, which is $24.48 under its stake. Scaled to 1,000 deals, that is roughly 619 wins for KJs, 374 for 87s and 7 chopped pots. ## The same matchup from the other side If you came looking for 87s against KJs, the numbers are the same with the hands swapped: 37.76% and 62.24%. ## Keep exploring Try KsJs against 8h7h 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 KsJs against 8h7h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsJs&p2=8h7h) - [KJs combos](https://georgelipoker.com/combos/kjs.md) - [87s combos](https://georgelipoker.com/combos/87s.md) - [KJs vs 86s](https://georgelipoker.com/equity/kjs-vs-86s.md) - [KJs vs 76s](https://georgelipoker.com/equity/kjs-vs-76s.md) - [A8s vs 87s](https://georgelipoker.com/equity/a8s-vs-87s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 16 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [KJs vs 86s: preflop equity](https://georgelipoker.com/equity/kjs-vs-86s.md) - [KJs vs 76s: preflop equity](https://georgelipoker.com/equity/kjs-vs-76s.md) - [A8s vs 87s: preflop equity](https://georgelipoker.com/equity/a8s-vs-87s.md)