66
49.54%
Wins 49.22%, ties 0.65%
J9s
50.46%
Wins 50.13%, ties 0.65%
66 against J9s: the numbers
| Hand | Wins | Ties | Loses | Equity |
|---|---|---|---|---|
| 66 | 49.219 | 0.648 | 50.133 | 49.543 |
| J9s | 50.133 | 0.648 | 49.219 | 50.457 |
The first hand is a pocket pair; the second is a suited hand. One hand holds a pair and the other holds two cards that both outrank it, which keeps the equity closer than most people expect.
That is a slim edge: neither hand is far ahead. The tie share is 0.65%: on those boards the pot is chopped and neither hand wins outright.
66 ranks number 17 of 169 starting hands, and J9s ranks number 55, by equity against a random hand.
| Hand | Boards won, about | Boards tied, about | Boards lost, about |
|---|---|---|---|
| 66 | 20,227,000 | 266,000 | 20,602,000 |
| J9s | 20,602,000 | 266,000 | 20,227,000 |
The board total is exact, 24 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.
| Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) |
|---|---|---|---|---|
| 66 | 0.982 | 2.032 | 1.995 | 1.018 |
| J9s | 1.018 | 1.995 | 2.032 | 0.982 |
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
J9s prefers rainbow flops topped by a ten or better, where it holds 52.69%, and likes low rainbow flops (nine high or lower) least, where it holds 40.02%. 66 is ahead on low rainbow flops (nine high or lower) and paired flops, even though it trails J9s when every flop is counted.
| Flop | Share of flops | 66 wins | Ties | J9s wins | 66 equity |
|---|---|---|---|---|---|
| Rainbow, ten or higher | 25.220 | 47.137 | 0.346 | 52.517 | 47.310 |
| Rainbow, nine or lower | 5.689 | 59.705 | 0.542 | 39.753 | 59.976 |
| Two-tone | 46.545 | 47.490 | 0.365 | 52.145 | 47.673 |
| Monotone | 5.212 | 48.250 | 2.543 | 49.207 | 49.522 |
| Paired | 17.334 | 53.740 | 1.314 | 44.946 | 54.397 |
A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank.
Compared with a random hand
The table below sets each hand against its own random-hand baseline: a change of -13.75 points for 66, from 63.29%, and -5.20 for J9s, from 55.66%.
| Case | Equity here | Against a random hand | Change in points | Times the random-hand equity |
|---|---|---|---|---|
| 66, all flops | 49.543 | 63.285 | -13.742 | 0.78286 |
| 66, rainbow, ten or higher | 47.310 | 63.285 | -15.975 | 0.74757 |
| 66, rainbow, nine or lower | 59.976 | 63.285 | -3.309 | 0.94771 |
| 66, two-tone | 47.673 | 63.285 | -15.612 | 0.75331 |
| 66, monotone | 49.522 | 63.285 | -13.763 | 0.78252 |
| 66, paired | 54.397 | 63.285 | -8.888 | 0.85956 |
| J9s, all flops | 50.457 | 55.662 | -5.205 | 0.90649 |
| J9s, rainbow, ten or higher | 52.690 | 55.662 | -2.972 | 0.94661 |
| J9s, rainbow, nine or lower | 40.024 | 55.662 | -15.638 | 0.71905 |
| J9s, two-tone | 52.327 | 55.662 | -3.335 | 0.94008 |
| J9s, monotone | 50.478 | 55.662 | -5.184 | 0.90687 |
| J9s, paired | 45.603 | 55.662 | -10.059 | 0.81928 |
Does a shared suit matter?
Of the deals of this matchup, 12 share a suit (J9s at 50.31%) and 12 do not (50.60%). J9s does better with no shared suit, by 0.29 points.
| Deals | Specific deals | Share of deals | 66 wins | Ties | J9s wins | 66 equity |
|---|---|---|---|---|---|---|
| Share a suit | 12 | 50.00 | 49.343 | 0.690 | 49.967 | 49.688 |
| No shared suit | 12 | 50.00 | 49.094 | 0.607 | 50.299 | 49.398 |
How often this matchup comes up
The class pair covers 24 combinations of specific cards in a fixed seat order, 0.0015% of 1,624,350, and 48 (0.0030%) in either order.
A worked example
Say each player puts $100 in before the flop, making a $200 pot. On average J9s takes back $100.92 of it, which is $0.92 more than it put in, and 66 takes back $99.08, $0.92 less than it put in.
Think in thousands: about 501 of 1,000 go to J9s, about 492 go to 66, and about 7 are chopped.
The same matchup from the other side
Swap the hands and you get J9s with 50.46% against 66 with 49.54%. We keep one page per matchup, with the better-ranked hand first.
Keep exploring
6s6h against Jd9d is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength.
How this was computed
The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 24 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it.
Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.
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