22 vs 87s: preflop equity

Averaged over every possible board, 87s is ahead of 22 by 6.74 points of equity, 53.37% to 46.63%.

22

46.63%

Wins 45.44%, ties 2.38%

87s

53.37%

Wins 52.18%, ties 2.38%

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

22 against 87s: the numbers

Exact preflop results for 22 against 87s, in percent
HandWinsTiesLosesEquity
2245.4432.38052.17746.633
87s52.1772.38045.44353.367

We compare a pocket pair with a suited hand. This is a pair against two overcards, a matchup that stays close because the other hand only needs one of its ranks to appear.

87s leads by less than 7 points of equity, so the result of any one deal is close to a toss-up. Ties are 2.38% of the outcomes here; each tied board gives both hands half the pot.

By strength against a random hand, 22 holds place 87 of 169 and 87s holds place 100.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
2218,675,000978,00021,442,000
87s21,442,000978,00018,675,000

Exact total: 24 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate.

22 against 87s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
220.8742.2011.9171.144
87s1.1441.9172.2010.874

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

Break the boards down by their first three cards and 87s is strongest on low rainbow flops (nine high or lower) (62.04%) and weakest on paired flops (50.64%). 87s stays ahead on all five textures.

22 against 87s by flop texture, in percent
FlopShare of flops22 winsTies87s wins22 equity
Rainbow, ten or higher25.84448.1471.35350.50048.824
Rainbow, nine or lower5.06537.5600.79761.64337.958
Two-tone46.54544.6801.20354.11745.281
Monotone5.21244.9714.42250.60747.182
Paired17.33445.9066.91847.17649.365

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

Compared with a random opponent, this matchup shifts 22 from 50.33% by -3.70 points and 87s from 47.94% by +5.43 points.

22 and 87s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
22, all flops46.63350.334-3.7010.92647
22, rainbow, ten or higher48.82450.334-1.5100.97000
22, rainbow, nine or lower37.95850.334-12.3760.75412
22, two-tone45.28150.334-5.0530.89961
22, monotone47.18250.334-3.1520.93738
22, paired49.36550.334-0.9690.98075
87s, all flops53.36747.936+5.4311.11330
87s, rainbow, ten or higher51.17647.936+3.2401.06759
87s, rainbow, nine or lower62.04247.936+14.1061.29427
87s, two-tone54.71947.936+6.7831.14150
87s, monotone52.81847.936+4.8821.10184
87s, paired50.63547.936+2.6991.05630

Does a shared suit matter?

The suit split reads 53.23% for 87s with a shared suit and 53.51% without one. 87s does better with no shared suit, by 0.28 points.

22 against 87s by suit overlap, in percent
DealsSpecific dealsShare of deals22 winsTies87s wins22 equity
Share a suit1250.0045.5742.39952.02746.773
No shared suit1250.0045.3122.36052.32846.492

How often this matchup comes up

22 against 87s is made up of 24 specific-card matchups in one seat order, 0.0015% of the 1,624,350 ordered deals, and 48 counting both seat orders, 0.0030%.

A worked example

To see what the equity is worth, imagine $100 each in a $200 pot. 87s is worth $106.74 on average (+$6.74); 22 is worth $93.26 (-$6.74).

Run 1,000 deals and the tally comes out near 522 for 87s, 454 for 22 and 24 ties.

The same matchup from the other side

87s against 22 adds nothing new: it is 53.37% for 87s and 46.63% for 22, the same figures reversed.

Try 2s2h against 8d7d 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

The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 24 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows.

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

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