--- title: "A5s vs JTo: preflop equity" url: "https://georgelipoker.com/equity/a5s-vs-jto.md" canonical_url: "https://georgelipoker.com/equity/a5s-vs-jto" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, A5s or JTo? A5s leads 57.12% to 42.88% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/a5s-vs-t9s.md", "https://georgelipoker.com/equity/a5s-vs-33.md", "https://georgelipoker.com/equity/a6s-vs-jto.md"] --- # A5s vs JTo: preflop equity Who is ahead, A5s or JTo? A5s leads 57.12% to 42.88% before the flop, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, A5s takes 57.12% of the pot on average and JTo takes the other 42.88%. ## A5s against JTo: the numbers **Exact preflop results for A5s against JTo, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A5s | 56.887 | 0.461 | 42.652 | 57.118 | | JTo | 42.652 | 0.461 | 56.887 | 42.882 | The matchup pits a suited hand against an offsuit hand. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits. A 14.24 point lead is real, and JTo still takes about 426 of every 1,000 deals outright. Ties are part of the picture: 0.46% of boards end in a split pot, and each side counts that as half a win. In the ranking of all 169 starting hands, A5s is number 30 and JTo is number 57. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A5s | 46,756,000 | 379,000 | 35,056,000 | | JTo | 35,056,000 | 379,000 | 46,756,000 | 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. **A5s against JTo read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | A5s | 1.332 | 1.758 | 2.345 | 0.751 | | JTo | 0.751 | 2.345 | 1.758 | 1.332 | 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 Split by what the flop looks like, A5s peaks at 70.60% on low rainbow flops (nine high or lower) and bottoms out at 50.18% on rainbow flops topped by a ten or better. A5s stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **A5s against JTo by flop texture, in percent** | Flop | Share of flops | A5s wins | Ties | JTo wins | A5s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.988 | 50.101 | 0.165 | 49.734 | 50.183 | | Rainbow, nine or lower | 7.042 | 70.205 | 0.787 | 29.008 | 70.598 | | Two-tone | 46.667 | 56.527 | 0.284 | 43.189 | 56.669 | | Monotone | 5.212 | 53.258 | 2.384 | 44.358 | 54.450 | | Paired | 17.091 | 63.015 | 0.641 | 36.344 | 63.335 | 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 Start from the random-hand figures, 59.92% for A5s and 55.25% for JTo. This opponent changes them by -2.80 and -12.37 points. **A5s and JTo 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 | | --- | --- | --- | --- | --- | | A5s, all flops | 57.118 | 59.923 | -2.805 | 0.95319 | | A5s, rainbow, ten or higher | 50.183 | 59.923 | -9.740 | 0.83746 | | A5s, rainbow, nine or lower | 70.598 | 59.923 | +10.675 | 1.17815 | | A5s, two-tone | 56.669 | 59.923 | -3.254 | 0.94570 | | A5s, monotone | 54.450 | 59.923 | -5.473 | 0.90867 | | A5s, paired | 63.335 | 59.923 | +3.412 | 1.05694 | | JTo, all flops | 42.882 | 55.248 | -12.366 | 0.77617 | | JTo, rainbow, ten or higher | 49.817 | 55.248 | -5.431 | 0.90170 | | JTo, rainbow, nine or lower | 29.402 | 55.248 | -25.846 | 0.53218 | | JTo, two-tone | 43.331 | 55.248 | -11.917 | 0.78430 | | JTo, monotone | 45.550 | 55.248 | -9.698 | 0.82446 | | JTo, paired | 36.665 | 55.248 | -18.583 | 0.66364 | ## Does a shared suit matter? Suit overlap shows up in the numbers. With a suit in common A5s has 56.76% equity, and with none in common it has 57.48%. A5s does better with no shared suit, by 0.72 points. **A5s against JTo by suit overlap, in percent** | Deals | Specific deals | Share of deals | A5s wins | Ties | JTo wins | A5s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 56.506 | 0.504 | 42.990 | 56.758 | | No shared suit | 24 | 50.00 | 57.268 | 0.419 | 42.313 | 57.477 | ## How often this matchup comes up How often does it happen? 48 of the 1,624,350 ordered deals (0.0030%) are A5s against JTo, and 96 (0.0059%) if either hand may sit in either seat. ## A worked example Take a $200 pot built from $100 each. A5s' equity of 57.12% is worth $114.24, a $14.24 edge, and JTo's 42.88% is worth $85.76, which is $14.24 under its stake. In 1,000 deals of exactly this matchup, expect about 569 won outright by A5s, about 426 won outright by JTo and about 5 split. ## The same matchup from the other side Swap the hands and you get JTo with 42.88% against A5s with 57.12%. We keep one page per matchup, with the better-ranked hand first. ## Keep exploring Open the calculator with As5s against JhTd 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 As5s against JhTd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As5s&p2=JhTd) - [A5s combos](https://georgelipoker.com/combos/a5s.md) - [JTo combos](https://georgelipoker.com/combos/jto.md) - [A5s vs T9s](https://georgelipoker.com/equity/a5s-vs-t9s.md) - [A5s vs 33](https://georgelipoker.com/equity/a5s-vs-33.md) - [A6s vs JTo](https://georgelipoker.com/equity/a6s-vs-jto.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Each figure is a complete count over boards. Take the 48 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [A5s vs T9s: preflop equity](https://georgelipoker.com/equity/a5s-vs-t9s.md) - [A5s vs 33: preflop equity](https://georgelipoker.com/equity/a5s-vs-33.md) - [A6s vs JTo: preflop equity](https://georgelipoker.com/equity/a6s-vs-jto.md)