--- title: "JTs vs A2s: preflop equity" url: "https://georgelipoker.com/equity/jts-vs-a2s.md" canonical_url: "https://georgelipoker.com/equity/jts-vs-a2s" last_updated: "2026-10-23" type: "reference" summary: "Who is ahead, JTs or A2s? A2s leads 54.32% to 45.68% before the flop, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/jts-vs-qto.md", "https://georgelipoker.com/equity/jts-vs-44.md", "https://georgelipoker.com/equity/q9s-vs-a2s.md"] --- # JTs vs A2s: preflop equity Who is ahead, JTs or A2s? A2s leads 54.32% to 45.68% before the flop, counted exactly over every board, with the split by flop type and suit. The exact count puts A2s at 54.32% and JTs at 45.68% when the two hands see all five board cards. ## JTs against A2s: the numbers **Exact preflop results for JTs against A2s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JTs | 45.418 | 0.529 | 54.053 | 45.682 | | A2s | 54.053 | 0.529 | 45.418 | 54.318 | Each side holds one of the suited hands: JTs and A2s. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits. That is a slim edge: neither hand is far ahead. A split pot comes up on 0.53% of boards, so the wins and the equity differ by half of that. In the ranking of all 169 starting hands, JTs is number 45 and A2s is number 46. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JTs | 12,443,000 | 145,000 | 14,809,000 | | A2s | 14,809,000 | 145,000 | 12,443,000 | The total is exact: 16 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. **JTs against A2s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | JTs | 0.841 | 2.202 | 1.850 | 1.189 | | A2s | 1.189 | 1.850 | 2.202 | 0.841 | In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity. ## Who is ahead on which flops Split by what the flop looks like, A2s peaks at 67.92% on low rainbow flops (nine high or lower) and bottoms out at 48.77% on rainbow flops topped by a ten or better. JTs is ahead on rainbow flops topped by a ten or better, even though it trails A2s when every flop is counted. **JTs against A2s by flop texture, in percent** | Flop | Share of flops | JTs wins | Ties | A2s wins | JTs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 51.148 | 0.156 | 48.696 | 51.226 | | Rainbow, nine or lower | 7.042 | 31.632 | 0.892 | 67.476 | 32.078 | | Two-tone | 46.727 | 46.815 | 0.290 | 52.895 | 46.960 | | Monotone | 5.273 | 45.861 | 3.439 | 50.700 | 47.581 | | Paired | 17.091 | 39.140 | 0.653 | 60.207 | 39.467 | 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 How much does the opponent matter? Compared with its random-hand 57.53%, JTs changes by -11.85 points, and A2s, from 57.38%, by -3.06. **JTs and A2s 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 | | --- | --- | --- | --- | --- | | JTs, all flops | 45.682 | 57.528 | -11.846 | 0.79408 | | JTs, rainbow, ten or higher | 51.226 | 57.528 | -6.302 | 0.89045 | | JTs, rainbow, nine or lower | 32.078 | 57.528 | -25.450 | 0.55761 | | JTs, two-tone | 46.960 | 57.528 | -10.568 | 0.81630 | | JTs, monotone | 47.581 | 57.528 | -9.947 | 0.82709 | | JTs, paired | 39.467 | 57.528 | -18.061 | 0.68605 | | A2s, all flops | 54.318 | 57.379 | -3.061 | 0.94665 | | A2s, rainbow, ten or higher | 48.774 | 57.379 | -8.605 | 0.85003 | | A2s, rainbow, nine or lower | 67.922 | 57.379 | +10.543 | 1.18374 | | A2s, two-tone | 53.040 | 57.379 | -4.339 | 0.92438 | | A2s, monotone | 52.419 | 57.379 | -4.960 | 0.91356 | | A2s, paired | 60.533 | 57.379 | +3.154 | 1.05497 | ## Does a shared suit matter? Of the deals of this matchup, 4 share a suit (A2s at 55.89%) and 12 do not (53.79%). A2s does better with a shared suit, by 2.10 points. **JTs against A2s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JTs wins | Ties | A2s wins | JTs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 43.806 | 0.610 | 55.584 | 44.111 | | No shared suit | 12 | 75.00 | 45.955 | 0.502 | 53.543 | 46.206 | ## How often this matchup comes up How often does it happen? 16 of the 1,624,350 ordered deals (0.0010%) are JTs against A2s, and 32 (0.0020%) if either hand may sit in either seat. ## A worked example Try it with money: two players each put in $100 and the whole board runs out every possible way. A2s averages $108.64 from the $200, up $8.64; JTs averages $91.36, down $8.64. Think in thousands: about 541 of 1,000 go to A2s, about 454 go to JTs, and about 5 are chopped. ## The same matchup from the other side The reversed view, A2s against JTs, shows 54.32% for A2s and 45.68% for JTs. It is the same count, so it redirects here. ## Keep exploring The calculator link fills in JsTs against Ah2h, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength. - [Open JsTs against Ah2h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsTs&p2=Ah2h) - [JTs combos](https://georgelipoker.com/combos/jts.md) - [A2s combos](https://georgelipoker.com/combos/a2s.md) - [JTs vs QTo](https://georgelipoker.com/equity/jts-vs-qto.md) - [JTs vs 44](https://georgelipoker.com/equity/jts-vs-44.md) - [Q9s vs A2s](https://georgelipoker.com/equity/q9s-vs-a2s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 16 deals of JTs against A2s 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 - [JTs vs QTo: preflop equity](https://georgelipoker.com/equity/jts-vs-qto.md) - [JTs vs 44: preflop equity](https://georgelipoker.com/equity/jts-vs-44.md) - [Q9s vs A2s: preflop equity](https://georgelipoker.com/equity/q9s-vs-a2s.md)