T9s vs 65s: preflop equity

Before any board card is dealt, T9s holds 63.53% equity against 65s, which leaves 65s with 36.47%.

T9s

63.53%

Wins 62.67%, ties 1.73%

65s

36.47%

Wins 35.60%, ties 1.73%

Equity counts a tie as half a win. Exact over every board.

T9s against 65s: the numbers

Exact preflop results for T9s against 65s, in percent
HandWinsTiesLosesEquity
T9s62.6681.73135.60163.533
65s35.6011.73162.66836.467

This is a contest between two suited hands, T9s and 65s. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits.

A 27.06 point lead is real, and 65s still takes about 356 of every 1,000 deals outright. About 1.73% of boards chop the pot, which is why equity sits slightly above the win figure for both hands.

T9s ranks number 64 of 169 starting hands, and 65s ranks number 128, by equity against a random hand.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
T9s17,169,000474,0009,754,000
65s9,754,000474,00017,169,000

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.

T9s against 65s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
T9s1.7421.5962.8090.574
65s0.5742.8091.5961.742

The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity.

Who is ahead on which flops

Split by what the flop looks like, T9s peaks at 68.03% on rainbow flops topped by a ten or better and bottoms out at 47.69% on low rainbow flops (nine high or lower). 65s takes over on low rainbow flops (nine high or lower), so the favorite before the flop is the underdog on those boards.

T9s against 65s by flop texture, in percent
FlopShare of flopsT9s winsTies65s winsT9s equity
Rainbow, ten or higher25.22067.4691.11131.42068.025
Rainbow, nine or lower5.68947.4410.49052.06947.686
Two-tone46.72762.7580.90936.33363.213
Monotone5.27358.9233.88337.19460.865
Paired17.09161.5614.64033.79963.881

Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank.

Compared with a random hand

How much does the opponent matter? Compared with its random-hand 54.03%, T9s changes by +9.50 points, and 65s, from 43.13%, by -6.66.

T9s and 65s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
T9s, all flops63.53354.028+9.5051.17593
T9s, rainbow, ten or higher68.02554.028+13.9971.25907
T9s, rainbow, nine or lower47.68654.028-6.3420.88262
T9s, two-tone63.21354.028+9.1851.17000
T9s, monotone60.86554.028+6.8371.12655
T9s, paired63.88154.028+9.8531.18237
65s, all flops36.46743.133-6.6660.84545
65s, rainbow, ten or higher31.97543.133-11.1580.74131
65s, rainbow, nine or lower52.31443.133+9.1811.21285
65s, two-tone36.78743.133-6.3460.85287
65s, monotone39.13543.133-3.9980.90731
65s, paired36.11943.133-7.0140.83739

Does a shared suit matter?

Looking only at deals where the hands share a suit, T9s has 65.92%; looking only at deals where they do not, 62.74%. T9s does better with a shared suit, by 3.18 points.

T9s against 65s by suit overlap, in percent
DealsSpecific dealsShare of dealsT9s winsTies65s winsT9s equity
Share a suit425.0064.9821.87833.14065.921
No shared suit1275.0061.8961.68236.42262.737

How often this matchup comes up

Counting specific cards, T9s against 65s appears in 16 of the 1,624,350 ordered heads-up deals (0.0010%), and in 32 when the seats are swapped too (0.0020%).

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says T9s gets $127.06 of it on average and 65s gets $72.94.

In 1,000 deals of exactly this matchup, expect about 627 won outright by T9s, about 356 won outright by 65s and about 17 split.

The same matchup from the other side

Swap the hands and you get 65s with 36.47% against T9s with 63.53%. We keep one page per matchup, with the better-ranked hand first.

Try Ts9s against 6h5h 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

We counted every case. Each suit pattern of the 16 specific T9s against 65s 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.

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