QJo vs 87s: preflop equity

The exact count puts QJo at 60.85% and 87s at 39.15% when the two hands see all five board cards.

QJo

60.85%

Wins 60.41%, ties 0.87%

87s

39.15%

Wins 38.72%, ties 0.87%

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

QJo against 87s: the numbers

Exact preflop results for QJo against 87s, in percent
HandWinsTiesLosesEquity
QJo60.4140.87238.71460.850
87s38.7140.87260.41439.150

Here an offsuit hand (QJo) meets a suited hand (87s). The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances.

That is a modest edge, the kind that shows up over many hands and is easy to miss in one. Of every 100 boards, about 0.87 are split pots, and the equity figures already include them.

In the ranking of all 169 starting hands, QJo is number 39 and 87s is number 100.

Boards behind the percentages: 82,190,592 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QJo49,655,000717,00031,819,000
87s31,819,000717,00049,655,000

The total is exact: 48 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand.

QJo against 87s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QJo1.5541.6552.5830.643
87s0.6432.5831.6551.554

The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call.

Who is ahead on which flops

Break the boards down by their first three cards and QJo is strongest on rainbow flops topped by a ten or better (68.92%) and weakest on low rainbow flops (nine high or lower) (36.71%). Low rainbow flops (nine high or lower) favor 87s, the hand that is behind overall.

QJo against 87s by flop texture, in percent
FlopShare of flopsQJo winsTies87s winsQJo equity
Rainbow, ten or higher24.71768.6840.46530.85168.917
Rainbow, nine or lower6.31336.4530.51963.02836.712
Two-tone46.66759.2740.44940.27759.498
Monotone5.21257.8302.52139.64959.091
Paired17.09161.2082.24636.54662.331

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 +2.71 points for QJo, from 58.14%, and -8.79 for 87s, from 47.94%.

QJo and 87s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QJo, all flops60.85058.135+2.7151.04670
QJo, rainbow, ten or higher68.91758.135+10.7821.18546
QJo, rainbow, nine or lower36.71258.135-21.4230.63150
QJo, two-tone59.49858.135+1.3631.02345
QJo, monotone59.09158.135+0.9561.01644
QJo, paired62.33158.135+4.1961.07218
87s, all flops39.15047.936-8.7860.81671
87s, rainbow, ten or higher31.08347.936-16.8530.64843
87s, rainbow, nine or lower63.28847.936+15.3521.32026
87s, two-tone40.50247.936-7.4340.84492
87s, monotone40.90947.936-7.0270.85341
87s, paired37.66947.936-10.2670.78582

Does a shared suit matter?

The suit split reads 61.55% for QJo with a shared suit and 60.15% without one. QJo does better with a shared suit, by 1.40 points.

QJo against 87s by suit overlap, in percent
DealsSpecific dealsShare of dealsQJo winsTies87s winsQJo equity
Share a suit2450.0061.0950.91437.99161.552
No shared suit2450.0059.7330.83039.43760.148

How often this matchup comes up

The class pair covers 48 combinations of specific cards in a fixed seat order, 0.0030% of 1,624,350, and 96 (0.0059%) in either order.

A worked example

To see what the equity is worth, imagine $100 each in a $200 pot. QJo is worth $121.70 on average (+$21.70); 87s is worth $78.30 (-$21.70).

Over a long run, 1,000 deals split into about 604 for QJo, 387 for 87s and 9 tied.

The same matchup from the other side

The mirror image, 87s against QJo, is 39.15% to 60.85%, and its address redirects to this page.

Open the calculator with QsJh against 8d7d already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking.

How this was computed

Each figure is a complete count over boards. Take the 48 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops.

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

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