KJo vs 87s: preflop equity

Averaged over every possible board, KJo is ahead of 87s by 19.42 points of equity, 59.71% to 40.29%.

KJo

59.71%

Wins 59.39%, ties 0.64%

87s

40.29%

Wins 39.97%, ties 0.64%

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

KJo against 87s: the numbers

Exact preflop results for KJo against 87s, in percent
HandWinsTiesLosesEquity
KJo59.3870.63839.97559.706
87s39.9750.63859.38740.294

We compare an offsuit hand with a suited hand. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits.

That is a modest edge, the kind that shows up over many hands and is easy to miss in one. The tie share is 0.64%: on those boards the pot is chopped and neither hand wins outright.

The hand ranking puts KJo at 26 and 87s at 100 out of 169 starting hands.

Boards behind the percentages: 82,190,592 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
KJo48,811,000524,00032,856,000
87s32,856,000524,00048,811,000

48 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.

KJo against 87s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
KJo1.4821.6842.5020.675
87s0.6752.5021.6841.482

The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity.

Who is ahead on which flops

If you know the kind of flop that came, the numbers shift: KJo holds 67.57% on rainbow flops topped by a ten or better and 35.12% on low rainbow flops (nine high or lower). Low rainbow flops (nine high or lower) favor 87s, the hand that is behind overall.

KJo against 87s by flop texture, in percent
FlopShare of flopsKJo winsTies87s winsKJo equity
Rainbow, ten or higher24.71767.4140.31832.26867.573
Rainbow, nine or lower6.31334.8550.53164.61435.120
Two-tone46.66758.0190.34141.64058.189
Monotone5.21256.8762.43740.68758.095
Paired17.09161.3441.40337.25362.046

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

Against one random hand instead, KJo holds 60.57% and 87s holds 47.94%. Facing each other changes that by -0.86 points for KJo and -7.65 points for 87s.

KJo and 87s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
KJo, all flops59.70660.569-0.8630.98575
KJo, rainbow, ten or higher67.57360.569+7.0041.11564
KJo, rainbow, nine or lower35.12060.569-25.4490.57983
KJo, two-tone58.18960.569-2.3800.96071
KJo, monotone58.09560.569-2.4740.95915
KJo, paired62.04660.569+1.4771.02439
87s, all flops40.29447.936-7.6420.84058
87s, rainbow, ten or higher32.42747.936-15.5090.67646
87s, rainbow, nine or lower64.88047.936+16.9441.35347
87s, two-tone41.81147.936-6.1250.87223
87s, monotone41.90547.936-6.0310.87419
87s, paired37.95447.936-9.9820.79176

Does a shared suit matter?

The suit split reads 60.40% for KJo with a shared suit and 59.02% without one. KJo does better with a shared suit, by 1.38 points.

KJo against 87s by suit overlap, in percent
DealsSpecific dealsShare of dealsKJo winsTies87s winsKJo equity
Share a suit2450.0060.0550.67939.26660.395
No shared suit2450.0058.7200.59640.68459.018

How often this matchup comes up

Out of 1,624,350 ways to deal two seats two cards each, 48 are KJo in one seat and 87s in the other (0.0030%); with the seats swapped too, 96 (0.0059%).

A worked example

Put $100 each into a $200 pot and deal every board once: KJo averages $119.42 back, ahead of its $100 by $19.42, while 87s averages $80.58, short of its $100 by $19.42.

Scaled to 1,000 deals, that is roughly 594 wins for KJo, 400 for 87s and 6 chopped pots.

The same matchup from the other side

One page covers both views. From 87s' side the equity is 40.29%, and from KJo's side it is 59.71%.

KsJh against 8d7d is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength.

How this was computed

The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 48 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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