AQs vs 87s: preflop equity

Before any board card is dealt, AQs holds 61.70% equity against 87s, which leaves 87s with 38.30%.

AQs

61.70%

Wins 61.47%, ties 0.47%

87s

38.30%

Wins 38.06%, ties 0.47%

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

AQs against 87s: the numbers

Exact preflop results for AQs against 87s, in percent
HandWinsTiesLosesEquity
AQs61.4720.46538.06361.704
87s38.0630.46561.47238.296

AQs meets 87s, and both are suited hands. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits.

AQs is ahead, but 87s is far from dead: it takes 380 of every 1,000 deals outright. A split pot comes up on 0.47% of boards, so the wins and the equity differ by half of that.

AQs ranks number 10 of 169 starting hands, and 87s ranks number 100, by equity against a random hand.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AQs16,841,000127,00010,428,000
87s10,428,000127,00016,841,000

16 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.

AQs against 87s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AQs1.6111.6272.6270.621
87s0.6212.6271.6271.611

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 AQs is strongest on rainbow flops topped by a ten or better (68.00%) and weakest on low rainbow flops (nine high or lower) (37.60%). Watch for low rainbow flops (nine high or lower): on those flops 87s holds the better equity.

AQs against 87s by flop texture, in percent
FlopShare of flopsAQs winsTies87s winsAQs equity
Rainbow, ten or higher24.59567.9210.16231.91768.002
Rainbow, nine or lower6.31437.3280.53762.13537.596
Two-tone46.72760.9210.22038.85961.031
Monotone5.27357.5053.39739.09859.203
Paired17.09163.8410.63735.52264.160

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

How much does the opponent matter? Compared with its random-hand 66.21%, AQs changes by -4.51 points, and 87s, from 47.94%, by -9.64.

AQs and 87s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AQs, all flops61.70466.209-4.5050.93196
AQs, rainbow, ten or higher68.00266.209+1.7931.02708
AQs, rainbow, nine or lower37.59666.209-28.6130.56784
AQs, two-tone61.03166.209-5.1780.92179
AQs, monotone59.20366.209-7.0060.89418
AQs, paired64.16066.209-2.0490.96905
87s, all flops38.29647.936-9.6400.79890
87s, rainbow, ten or higher31.99847.936-15.9380.66752
87s, rainbow, nine or lower62.40447.936+14.4681.30182
87s, two-tone38.96947.936-8.9670.81294
87s, monotone40.79747.936-7.1390.85107
87s, paired35.84047.936-12.0960.74766

Does a shared suit matter?

The suit split reads 63.86% for AQs with a shared suit and 60.99% without one. AQs does better with a shared suit, by 2.87 points.

AQs against 87s by suit overlap, in percent
DealsSpecific dealsShare of dealsAQs winsTies87s winsAQs equity
Share a suit425.0063.5870.54135.87263.857
No shared suit1275.0060.7670.43938.79460.986

How often this matchup comes up

Exactly 16 specific deals fit this matchup in one seat order, which is 0.0010% of 1,624,350; both orders together give 32, or 0.0020%.

A worked example

Put $100 each into a $200 pot and deal every board once: AQs averages $123.40 back, ahead of its $100 by $23.40, while 87s averages $76.60, short of its $100 by $23.40.

Run 1,000 deals and the tally comes out near 615 for AQs, 380 for 87s and 5 ties.

The same matchup from the other side

If you came looking for 87s against AQs, the numbers are the same with the hands swapped: 38.30% and 61.70%.

Open the calculator with AsQs against 8h7h 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

The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 16 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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