T9o vs 22: preflop equity

Before any board card is dealt, T9o holds 51.42% equity against 22, which leaves 22 with 48.58%.

T9o

51.42%

Wins 50.55%, ties 1.75%

22

48.58%

Wins 47.70%, ties 1.75%

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

T9o against 22: the numbers

Exact preflop results for T9o against 22, in percent
HandWinsTiesLosesEquity
T9o50.5461.74847.70651.420
2247.7061.74850.54648.580

The matchup pits an offsuit hand against a pocket pair. One hand holds a pair and the other holds two cards that both outrank it, which keeps the equity closer than most people expect.

T9o leads by less than 3 points of equity, so the result of any one deal is close to a toss-up. 1.75% of boards are ties, so the equity of each hand is its win rate plus half of that.

Among the 169 starting hands, T9o is number 78 and 22 is number 87 by strength against a random hand.

Boards behind the percentages: 123,285,888 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
T9o62,316,0002,155,00058,815,000
2258,815,0002,155,00062,316,000

72 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.

T9o against 22 read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
T9o1.0581.9782.0960.945
220.9452.0961.9781.058

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

Split by what the flop looks like, T9o peaks at 53.43% on monotone flops and bottoms out at 45.78% on low rainbow flops (nine high or lower). 22 is ahead on low rainbow flops (nine high or lower) and paired flops, even though it trails T9o when every flop is counted.

T9o against 22 by flop texture, in percent
FlopShare of flopsT9o winsTies22 winsT9o equity
Rainbow, ten or higher25.34152.3830.97946.63852.873
Rainbow, nine or lower5.68945.3870.78153.83245.777
Two-tone46.48551.2620.92747.81151.725
Monotone5.15151.8393.18144.98053.429
Paired17.33447.2514.96747.78249.735

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 -0.11 points for T9o, from 51.53%, and -1.75 for 22, from 50.33%.

T9o and 22 here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
T9o, all flops51.42051.532-0.1120.99783
T9o, rainbow, ten or higher52.87351.532+1.3411.02602
T9o, rainbow, nine or lower45.77751.532-5.7550.88832
T9o, two-tone51.72551.532+0.1931.00375
T9o, monotone53.42951.532+1.8971.03681
T9o, paired49.73551.532-1.7970.96513
22, all flops48.58050.334-1.7540.96515
22, rainbow, ten or higher47.12750.334-3.2070.93629
22, rainbow, nine or lower54.22350.334+3.8891.07726
22, two-tone48.27550.334-2.0590.95909
22, monotone46.57150.334-3.7630.92524
22, paired50.26550.334-0.0690.99863

Does a shared suit matter?

Split by suits, the deals give T9o 51.51% when the hands overlap in a suit and 50.97% when they do not. T9o does better with a shared suit, by 0.54 points.

T9o against 22 by suit overlap, in percent
DealsSpecific dealsShare of dealsT9o winsTies22 winsT9o equity
Share a suit6083.3350.6341.75547.61151.511
No shared suit1216.6750.1091.71248.17950.965

How often this matchup comes up

How often does it happen? 72 of the 1,624,350 ordered deals (0.0044%) are T9o against 22, and 144 (0.0089%) if either hand may sit in either seat.

A worked example

Worked example: both players commit $100, so $200 sits in the middle. Over every board, T9o's average share is $102.84 (a gain of $2.84) and 22's is $97.16 (a loss of $2.84).

Per 1,000 deals: T9o wins about 505, 22 wins about 477, and about 18 end in a split pot.

The same matchup from the other side

One page covers both views. From 22's side the equity is 48.58%, and from T9o's side it is 51.42%.

The calculator link fills in Ts9h against 2d2c, 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

The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 72 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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