66
49.12%
Wins 48.76%, ties 0.72%
T9s
50.88%
Wins 50.52%, ties 0.72%
66 against T9s: the numbers
| Hand | Wins | Ties | Loses | Equity |
|---|---|---|---|---|
| 66 | 48.758 | 0.721 | 50.521 | 49.119 |
| T9s | 50.521 | 0.721 | 48.758 | 50.881 |
One side is a pocket pair, the other is 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.
That is a slim edge: neither hand is far ahead. A split pot comes up on 0.72% of boards, so the wins and the equity differ by half of that.
Ranked by equity against a random hand, 66 is number 17 of the 169 starting hands and T9s is number 64.
| Hand | Boards won, about | Boards tied, about | Boards lost, about |
|---|---|---|---|
| 66 | 20,037,000 | 296,000 | 20,762,000 |
| T9s | 20,762,000 | 296,000 | 20,037,000 |
The total is exact: 24 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.
| Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) |
|---|---|---|---|---|
| 66 | 0.965 | 2.051 | 1.979 | 1.036 |
| T9s | 1.036 | 1.979 | 2.051 | 0.965 |
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
Across the five flop textures T9s' equity moves by 11.11 points, from 41.88% on low rainbow flops (nine high or lower) to 52.99% on rainbow flops topped by a ten or better. 66 is ahead on low rainbow flops (nine high or lower) and paired flops, even though it trails T9s when every flop is counted.
| Flop | Share of flops | 66 wins | Ties | T9s wins | 66 equity |
|---|---|---|---|---|---|
| Rainbow, ten or higher | 25.220 | 46.804 | 0.406 | 52.790 | 47.007 |
| Rainbow, nine or lower | 5.689 | 57.896 | 0.442 | 41.662 | 58.117 |
| Two-tone | 46.545 | 46.943 | 0.396 | 52.661 | 47.141 |
| Monotone | 5.212 | 47.802 | 2.571 | 49.627 | 49.087 |
| Paired | 17.334 | 53.766 | 1.586 | 44.648 | 54.559 |
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
Start from the random-hand figures, 63.29% for 66 and 54.03% for T9s. This opponent changes them by -14.17 and -3.15 points.
| Case | Equity here | Against a random hand | Change in points | Times the random-hand equity |
|---|---|---|---|---|
| 66, all flops | 49.119 | 63.285 | -14.166 | 0.77616 |
| 66, rainbow, ten or higher | 47.007 | 63.285 | -16.278 | 0.74278 |
| 66, rainbow, nine or lower | 58.117 | 63.285 | -5.168 | 0.91834 |
| 66, two-tone | 47.141 | 63.285 | -16.144 | 0.74490 |
| 66, monotone | 49.087 | 63.285 | -14.198 | 0.77565 |
| 66, paired | 54.559 | 63.285 | -8.726 | 0.86212 |
| T9s, all flops | 50.881 | 54.028 | -3.147 | 0.94175 |
| T9s, rainbow, ten or higher | 52.993 | 54.028 | -1.035 | 0.98084 |
| T9s, rainbow, nine or lower | 41.883 | 54.028 | -12.145 | 0.77521 |
| T9s, two-tone | 52.859 | 54.028 | -1.169 | 0.97836 |
| T9s, monotone | 50.913 | 54.028 | -3.115 | 0.94234 |
| T9s, paired | 45.441 | 54.028 | -8.587 | 0.84106 |
Does a shared suit matter?
The suit split reads 50.76% for T9s with a shared suit and 51.00% without one. The two rows differ by only 0.24 points, so suits barely change this matchup.
| Deals | Specific deals | Share of deals | 66 wins | Ties | T9s wins | 66 equity |
|---|---|---|---|---|---|---|
| Share a suit | 12 | 50.00 | 48.860 | 0.762 | 50.378 | 49.241 |
| No shared suit | 12 | 50.00 | 48.657 | 0.680 | 50.663 | 48.997 |
How often this matchup comes up
Counting specific cards, 66 against T9s appears in 24 of the 1,624,350 ordered heads-up deals (0.0015%), and in 48 when the seats are swapped too (0.0030%).
A worked example
Take a $200 pot built from $100 each. T9s' equity of 50.88% is worth $101.76, a $1.76 edge, and 66's 49.12% is worth $98.24, which is $1.76 under its stake.
In 1,000 deals of exactly this matchup, expect about 505 won outright by T9s, about 488 won outright by 66 and about 7 split.
The same matchup from the other side
T9s against 66 adds nothing new: it is 50.88% for T9s and 49.12% for 66, the same figures reversed.
Keep exploring
Try 6s6h against Td9d 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.
How this was computed
All 1,712,304 five-card boards are dealt for every suit pattern among the 24 specific deals of 66 against T9s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.
Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.
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