22 vs 54s: preflop equity

If 54s and 22 get all the chips in before the flop, 54s owns 51.35% of the pot in the long run and 22 owns 48.65%.

22

48.65%

Wins 46.91%, ties 3.49%

54s

51.35%

Wins 49.60%, ties 3.49%

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

22 against 54s: the numbers

Exact preflop results for 22 against 54s, in percent
HandWinsTiesLosesEquity
2246.9103.48749.60348.654
54s49.6033.48746.91051.346

Here a pocket pair (22) meets a suited hand (54s). This is a pair against two overcards, a matchup that stays close because the other hand only needs one of its ranks to appear.

54s leads by less than 3 points of equity, so the result of any one deal is close to a toss-up. Ties are 3.49% of the outcomes here; each tied board gives both hands half the pot.

The hand ranking puts 22 at 87 and 54s at 136 out of 169 starting hands.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
2219,278,0001,433,00020,384,000
54s20,384,0001,433,00019,278,000

The board total is exact, 24 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.

22 against 54s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
220.9482.1322.0161.055
54s1.0552.0162.1320.948

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

Across the five flop textures 54s' equity moves by 15.60 points, from 47.15% on paired flops to 62.75% on low rainbow flops (nine high or lower). The overall edge for 54s hides rainbow flops topped by a ten or better and paired flops, where 22 comes out in front.

22 against 54s by flop texture, in percent
FlopShare of flops22 winsTies54s wins22 equity
Rainbow, ten or higher25.84450.2291.92047.85151.189
Rainbow, nine or lower5.06536.3801.75061.87037.255
Two-tone46.54546.0691.79752.13446.968
Monotone5.21245.7545.00749.23948.257
Paired17.33447.64610.41241.94252.852

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 50.33%, 22 changes by -1.68 points, and 54s, from 41.45%, by +9.90.

22 and 54s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
22, all flops48.65450.334-1.6800.96662
22, rainbow, ten or higher51.18950.334+0.8551.01699
22, rainbow, nine or lower37.25550.334-13.0790.74016
22, two-tone46.96850.334-3.3660.93313
22, monotone48.25750.334-2.0770.95874
22, paired52.85250.334+2.5181.05003
54s, all flops51.34641.453+9.8931.23866
54s, rainbow, ten or higher48.81141.453+7.3581.17750
54s, rainbow, nine or lower62.74541.453+21.2921.51364
54s, two-tone53.03241.453+11.5791.27933
54s, monotone51.74341.453+10.2901.24823
54s, paired47.14841.453+5.6951.13738

Does a shared suit matter?

Of the deals of this matchup, 12 share a suit (54s at 51.23%) and 12 do not (51.46%). The two rows differ by only 0.23 points, so suits barely change this matchup.

22 against 54s by suit overlap, in percent
DealsSpecific dealsShare of deals22 winsTies54s wins22 equity
Share a suit1250.0047.0133.50649.48148.766
No shared suit1250.0046.8083.46849.72448.542

How often this matchup comes up

Counting specific cards, 22 against 54s appears in 24 of the 1,624,350 ordered heads-up deals (0.0015%), and in 48 when the seats are swapped too (0.0030%).

A worked example

Put $100 each into a $200 pot and deal every board once: 54s averages $102.70 back, ahead of its $100 by $2.70, while 22 averages $97.30, short of its $100 by $2.70.

Out of 1,000 deals you should see around 496 outright wins for 54s, 469 for 22, and 35 split pots.

The same matchup from the other side

54s against 22 adds nothing new: it is 51.35% for 54s and 48.65% for 22, the same figures reversed.

Try 2s2h against 5d4d 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

All 1,712,304 five-card boards are dealt for every suit pattern among the 24 specific deals of 22 against 54s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.

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

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