--- title: "66 vs JTs: preflop equity" url: "https://georgelipoker.com/equity/66-vs-jts.md" canonical_url: "https://georgelipoker.com/equity/66-vs-jts" last_updated: "2026-10-23" type: "reference" summary: "66 vs JTs is close to a coin flip before the flop: 47.94% to 52.06% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/66-vs-a2s.md", "https://georgelipoker.com/equity/66-vs-qto.md", "https://georgelipoker.com/equity/a9s-vs-jts.md"] --- # 66 vs JTs: preflop equity 66 vs JTs is close to a coin flip before the flop: 47.94% to 52.06% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 52.06% for JTs and 47.94% for 66, so JTs leads by 4.12 points. ## 66 against JTs: the numbers **Exact preflop results for 66 against JTs, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | 66 | 47.627 | 0.620 | 51.753 | 47.937 | | JTs | 51.753 | 0.620 | 47.627 | 52.063 | We compare a pocket pair with a suited hand. A pair against two higher cards is the classic race: the pair is usually a small favorite or close to even, and each overcard that pairs is a way to take the lead. This is close to even money, with JTs a little ahead. Split pots make up 0.62% of the boards, and both equity figures count them as half a win each. Among the 169 starting hands, 66 is number 17 and JTs is number 45 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 | | --- | --- | --- | --- | | 66 | 19,572,000 | 255,000 | 21,268,000 | | JTs | 21,268,000 | 255,000 | 19,572,000 | 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. **66 against JTs read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | 66 | 0.921 | 2.100 | 1.932 | 1.086 | | JTs | 1.086 | 1.932 | 2.100 | 0.921 | 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. JTs does best on rainbow flops topped by a ten or better, at 58.01%, and worst on low rainbow flops (nine high or lower), at 29.76%. JTs is the favorite overall but falls behind on low rainbow flops (nine high or lower) and paired flops. **66 against JTs by flop texture, in percent** | Flop | Share of flops | 66 wins | Ties | JTs wins | 66 equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 41.831 | 0.323 | 57.846 | 41.992 | | Rainbow, nine or lower | 6.314 | 69.981 | 0.528 | 29.491 | 70.245 | | Two-tone | 46.545 | 45.794 | 0.350 | 53.856 | 45.969 | | Monotone | 5.212 | 47.078 | 2.533 | 50.389 | 48.344 | | Paired | 17.334 | 52.794 | 1.228 | 45.978 | 53.408 | 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 63.29%, 66 changes by -15.35 points, and JTs, from 57.53%, by -5.47. **66 and JTs 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 | | --- | --- | --- | --- | --- | | 66, all flops | 47.937 | 63.285 | -15.348 | 0.75748 | | 66, rainbow, ten or higher | 41.992 | 63.285 | -21.293 | 0.66354 | | 66, rainbow, nine or lower | 70.245 | 63.285 | +6.960 | 1.10998 | | 66, two-tone | 45.969 | 63.285 | -17.316 | 0.72638 | | 66, monotone | 48.344 | 63.285 | -14.941 | 0.76391 | | 66, paired | 53.408 | 63.285 | -9.877 | 0.84393 | | JTs, all flops | 52.063 | 57.528 | -5.465 | 0.90500 | | JTs, rainbow, ten or higher | 58.008 | 57.528 | +0.480 | 1.00834 | | JTs, rainbow, nine or lower | 29.755 | 57.528 | -27.773 | 0.51723 | | JTs, two-tone | 54.031 | 57.528 | -3.497 | 0.93921 | | JTs, monotone | 51.656 | 57.528 | -5.872 | 0.89793 | | JTs, paired | 46.592 | 57.528 | -10.936 | 0.80990 | ## Does a shared suit matter? The suit split reads 51.93% for JTs with a shared suit and 52.20% without one. JTs does better with no shared suit, by 0.27 points. **66 against JTs by suit overlap, in percent** | Deals | Specific deals | Share of deals | 66 wins | Ties | JTs wins | 66 equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 47.738 | 0.663 | 51.599 | 48.069 | | No shared suit | 12 | 50.00 | 47.516 | 0.578 | 51.906 | 47.805 | ## 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 With $100 from each side, the $200 pot is split on average as $104.12 for JTs and $95.88 for 66; the first side gains $4.12 per all-in and the second gives up $4.12. A thousand deals look like this: JTs takes 518, 66 takes 476, 6 are ties. ## The same matchup from the other side JTs versus 66 is this same page seen from the other hand: 52.06% for JTs, 47.94% for 66. ## Keep exploring Try 6s6h against JdTd 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 6s6h against JdTd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=6s6h&p2=JdTd) - [66 combos](https://georgelipoker.com/combos/66.md) - [JTs combos](https://georgelipoker.com/combos/jts.md) - [66 vs A2s](https://georgelipoker.com/equity/66-vs-a2s.md) - [66 vs QTo](https://georgelipoker.com/equity/66-vs-qto.md) - [A9s vs JTs](https://georgelipoker.com/equity/a9s-vs-jts.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 24 specific 66 against JTs deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [66 vs A2s: preflop equity](https://georgelipoker.com/equity/66-vs-a2s.md) - [66 vs QTo: preflop equity](https://georgelipoker.com/equity/66-vs-qto.md) - [A9s vs JTs: preflop equity](https://georgelipoker.com/equity/a9s-vs-jts.md)