--- title: "KJo vs A5s: preflop equity" url: "https://georgelipoker.com/equity/kjo-vs-a5s.md" canonical_url: "https://georgelipoker.com/equity/kjo-vs-a5s" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, KJo or A5s? A5s leads 59.95% to 40.05% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kjo-vs-a6s.md", "https://georgelipoker.com/equity/kjo-vs-kto.md", "https://georgelipoker.com/equity/55-vs-a5s.md"] --- # KJo vs A5s: preflop equity Who is ahead, KJo or A5s? A5s leads 59.95% to 40.05% before the flop, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, A5s is ahead of KJo by 19.90 points of equity, 59.95% to 40.05%. ## KJo against A5s: the numbers **Exact preflop results for KJo against A5s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KJo | 39.809 | 0.480 | 59.711 | 40.049 | | A5s | 59.711 | 0.480 | 39.809 | 59.951 | We compare an offsuit hand with a suited hand. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other. A 19.90 point lead is real, and KJo still takes about 398 of every 1,000 deals outright. A split pot comes up on 0.48% of boards, so the wins and the equity differ by half of that. Ranked by equity against a random hand, KJo is number 26 of the 169 starting hands and A5s is number 30. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KJo | 32,719,000 | 395,000 | 49,077,000 | | A5s | 49,077,000 | 395,000 | 32,719,000 | The total is exact: 48 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **KJo 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) | | --- | --- | --- | --- | --- | | KJo | 0.668 | 2.512 | 1.675 | 1.497 | | A5s | 1.497 | 1.675 | 2.512 | 0.668 | The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call. ## Who is ahead on which flops The flop changes the picture. A5s does best on low rainbow flops (nine high or lower), at 77.83%, and worst on rainbow flops topped by a ten or better, at 52.26%. A5s stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **KJo against A5s by flop texture, in percent** | Flop | Share of flops | KJo wins | Ties | A5s wins | KJo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.988 | 47.679 | 0.128 | 52.193 | 47.743 | | Rainbow, nine or lower | 7.042 | 21.659 | 1.026 | 77.315 | 22.172 | | Two-tone | 46.667 | 40.197 | 0.310 | 59.493 | 40.352 | | Monotone | 5.212 | 42.211 | 2.404 | 55.385 | 43.413 | | Paired | 17.091 | 34.451 | 0.628 | 64.921 | 34.765 | 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 Relative to a random opponent, KJo changes by -20.52 points (baseline 60.57%) and A5s by +0.03 points (baseline 59.92%). **KJo 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 | | --- | --- | --- | --- | --- | | KJo, all flops | 40.049 | 60.569 | -20.520 | 0.66121 | | KJo, rainbow, ten or higher | 47.743 | 60.569 | -12.826 | 0.78824 | | KJo, rainbow, nine or lower | 22.172 | 60.569 | -38.397 | 0.36606 | | KJo, two-tone | 40.352 | 60.569 | -20.217 | 0.66622 | | KJo, monotone | 43.413 | 60.569 | -17.156 | 0.71675 | | KJo, paired | 34.765 | 60.569 | -25.804 | 0.57397 | | A5s, all flops | 59.951 | 59.923 | +0.028 | 1.00047 | | A5s, rainbow, ten or higher | 52.257 | 59.923 | -7.666 | 0.87207 | | A5s, rainbow, nine or lower | 77.828 | 59.923 | +17.905 | 1.29880 | | A5s, two-tone | 59.648 | 59.923 | -0.275 | 0.99541 | | A5s, monotone | 56.587 | 59.923 | -3.336 | 0.94433 | | A5s, paired | 65.235 | 59.923 | +5.312 | 1.08865 | ## Does a shared suit matter? The suit split reads 59.62% for A5s with a shared suit and 60.29% without one. A5s does better with no shared suit, by 0.67 points. **KJo against A5s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KJo wins | Ties | A5s wins | KJo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 40.124 | 0.521 | 59.355 | 40.384 | | No shared suit | 24 | 50.00 | 39.495 | 0.439 | 60.066 | 39.714 | ## How often this matchup comes up Counting specific cards, KJo against A5s appears in 48 of the 1,624,350 ordered heads-up deals (0.0030%), and in 96 when the seats are swapped too (0.0059%). ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says A5s gets $119.90 of it on average and KJo gets $80.10. Run 1,000 deals and the tally comes out near 597 for A5s, 398 for KJo and 5 ties. ## The same matchup from the other side If you came looking for A5s against KJo, the numbers are the same with the hands swapped: 59.95% and 40.05%. ## Keep exploring Open the calculator with KsJh against Ad5d already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking. - [Open KsJh against Ad5d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsJh&p2=Ad5d) - [KJo combos](https://georgelipoker.com/combos/kjo.md) - [A5s combos](https://georgelipoker.com/combos/a5s.md) - [KJo vs A6s](https://georgelipoker.com/equity/kjo-vs-a6s.md) - [KJo vs KTo](https://georgelipoker.com/equity/kjo-vs-kto.md) - [55 vs A5s](https://georgelipoker.com/equity/55-vs-a5s.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 48 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 - [KJo vs A6s: preflop equity](https://georgelipoker.com/equity/kjo-vs-a6s.md) - [KJo vs KTo: preflop equity](https://georgelipoker.com/equity/kjo-vs-kto.md) - [55 vs A5s: preflop equity](https://georgelipoker.com/equity/55-vs-a5s.md)