99 vs T9s: preflop equity

Before any board card is dealt, 99 holds 61.16% equity against T9s, which leaves T9s with 38.84%.

99

61.16%

Wins 60.20%, ties 1.91%

T9s

38.84%

Wins 37.89%, ties 1.91%

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

99 against T9s: the numbers

Exact preflop results for 99 against T9s, in percent
HandWinsTiesLosesEquity
9960.2011.90737.89261.155
T9s37.8921.90760.20138.845

99 and T9s are a pocket pair and a suited hand, in that order. One hand holds a card of the same rank as the pair, which removes a card the pair needs and makes the pair a bigger favorite.

A 22.32 point lead is real, and T9s still takes about 379 of every 1,000 deals outright. Ties are 1.91% of the outcomes here; each tied board gives both hands half the pot.

In the ranking of all 169 starting hands, 99 is number 6 and T9s is number 64.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
9912,370,000392,0007,786,000
T9s7,786,000392,00012,370,000

12 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand.

99 against T9s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
991.5741.6612.6390.635
T9s0.6352.6391.6611.574

The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call.

Who is ahead on which flops

Across the five flop textures 99's equity moves by 17.27 points, from 58.24% on monotone flops to 75.51% on low rainbow flops (nine high or lower). 99 stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

99 against T9s by flop texture, in percent
FlopShare of flops99 winsTiesT9s wins99 equity
Rainbow, ten or higher25.19757.2872.15440.55958.364
Rainbow, nine or lower5.58574.6341.75423.61275.511
Two-tone46.23657.6631.92540.41258.625
Monotone5.15156.8422.80340.35558.244
Paired17.83167.3511.30131.34868.002

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

Each hand has a baseline against a random hand: 72.06% for 99, 54.03% for T9s. Here the change is -10.90 and -15.19 points.

99 and T9s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
99, all flops61.15572.057-10.9020.84870
99, rainbow, ten or higher58.36472.057-13.6930.80997
99, rainbow, nine or lower75.51172.057+3.4541.04793
99, two-tone58.62572.057-13.4320.81359
99, monotone58.24472.057-13.8130.80830
99, paired68.00272.057-4.0550.94373
T9s, all flops38.84554.028-15.1830.71898
T9s, rainbow, ten or higher41.63654.028-12.3920.77064
T9s, rainbow, nine or lower24.48954.028-29.5390.45326
T9s, two-tone41.37554.028-12.6530.76581
T9s, monotone41.75654.028-12.2720.77286
T9s, paired31.99854.028-22.0300.59225

Does a shared suit matter?

Suits do not split this matchup, because no legal deal has the hands holding the same suit.

99 against T9s by suit overlap, in percent
DealsSpecific dealsShare of deals99 winsTiesT9s wins99 equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0060.2011.90737.89261.155

How often this matchup comes up

99 against T9s is made up of 12 specific-card matchups in one seat order, 0.0007% of the 1,624,350 ordered deals, and 24 counting both seat orders, 0.0015%.

A worked example

Say each player puts $100 in before the flop, making a $200 pot. On average 99 takes back $122.32 of it, which is $22.32 more than it put in, and T9s takes back $77.68, $22.32 less than it put in.

A thousand deals look like this: 99 takes 602, T9s takes 379, 19 are ties.

The same matchup from the other side

T9s versus 99 is this same page seen from the other hand: 38.84% for T9s, 61.16% for 99.

The calculator link fills in 9s9h against Td9d, 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.

How this was computed

We counted every case. Each suit pattern of the 12 specific 99 against T9s 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.

Bring your own hands to a session

Review the spots you actually play against these numbers in a Game Assessment, and leave with a one-page written plan.

Book a session