22 vs 97s: preflop equity

The exact count puts 97s at 52.73% and 22 at 47.27% when the two hands see all five board cards.

22

47.27%

Wins 46.23%, ties 2.08%

97s

52.73%

Wins 51.69%, ties 2.08%

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

22 against 97s: the numbers

Exact preflop results for 22 against 97s, in percent
HandWinsTiesLosesEquity
2246.2302.08351.68747.271
97s51.6872.08346.23052.729

Here a pocket pair (22) meets a suited hand (97s). One hand holds a pair and the other holds two cards that both outrank it, which keeps the equity closer than most people expect.

This is close to even money, with 97s a little ahead. The tie share is 2.08%: on those boards the pot is chopped and neither hand wins outright.

Ranked by equity against a random hand, 22 is number 87 of the 169 starting hands and 97s is number 94.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
2218,998,000856,00021,241,000
97s21,241,000856,00018,998,000

24 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.

22 against 97s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
220.8962.1631.9351.115
97s1.1151.9352.1630.896

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, 97s peaks at 60.33% on low rainbow flops (nine high or lower) and bottoms out at 50.52% on rainbow flops topped by a ten or better. 97s stays ahead on all five textures.

22 against 97s by flop texture, in percent
FlopShare of flops22 winsTies97s wins22 equity
Rainbow, ten or higher25.84448.8851.18249.93349.476
Rainbow, nine or lower5.06539.2900.76159.94939.670
Two-tone46.54545.4961.06153.44346.027
Monotone5.21245.5504.30350.14747.701
Paired17.33446.4715.89247.63749.417

Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank.

Compared with a random hand

How much does the opponent matter? Compared with its random-hand 50.33%, 22 changes by -3.06 points, and 97s, from 49.12%, by +3.61.

22 and 97s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
22, all flops47.27150.334-3.0630.93915
22, rainbow, ten or higher49.47650.334-0.8580.98295
22, rainbow, nine or lower39.67050.334-10.6640.78814
22, two-tone46.02750.334-4.3070.91443
22, monotone47.70150.334-2.6330.94769
22, paired49.41750.334-0.9170.98178
97s, all flops52.72949.118+3.6111.07352
97s, rainbow, ten or higher50.52449.118+1.4061.02862
97s, rainbow, nine or lower60.33049.118+11.2121.22827
97s, two-tone53.97349.118+4.8551.09884
97s, monotone52.29949.118+3.1811.06476
97s, paired50.58349.118+1.4651.02983

Does a shared suit matter?

Does suit overlap move the numbers? 97s has 52.58% when the hands share a suit and 52.88% when they do not. 97s does better with no shared suit, by 0.30 points.

22 against 97s by suit overlap, in percent
DealsSpecific dealsShare of deals22 winsTies97s wins22 equity
Share a suit1250.0046.3722.10351.52547.424
No shared suit1250.0046.0872.06451.84947.119

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 97s takes back $105.46 of it, which is $5.46 more than it put in, and 22 takes back $94.54, $5.46 less than it put in.

Out of 1,000 deals you should see around 517 outright wins for 97s, 462 for 22, and 21 split pots.

The same matchup from the other side

The reversed view, 97s against 22, shows 52.73% for 97s and 47.27% for 22. It is the same count, so it redirects here.

Try 2s2h against 9d7d 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

Nothing here is simulated. The 24 deals of 22 against 97s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops.

Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.

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