A8s vs 75s: preflop equity

Counting every board, the equity split is 62.71% for A8s and 37.29% for 75s, so A8s leads by 25.42 points.

A8s

62.71%

Wins 62.46%, ties 0.50%

75s

37.29%

Wins 37.04%, ties 0.50%

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

A8s against 75s: the numbers

Exact preflop results for A8s against 75s, in percent
HandWinsTiesLosesEquity
A8s62.4590.49837.04362.708
75s37.0430.49862.45937.292

A8s and 75s are both suited hands. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits.

The lead is steady rather than large, and the flop still has plenty of say in who wins. Ties are part of the picture: 0.50% of boards end in a split pot, and each side counts that as half a win.

Ranked by equity against a random hand, A8s is number 21 of the 169 starting hands and 75s is number 124.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
A8s17,112,000136,00010,149,000
75s10,149,000136,00017,112,000

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.

A8s against 75s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
A8s1.6821.6012.7000.595
75s0.5952.7001.6011.682

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 A8s' equity moves by 20.65 points, from 46.00% on low rainbow flops (nine high or lower) to 66.65% on rainbow flops topped by a ten or better. 75s is ahead on low rainbow flops (nine high or lower), even though it trails A8s when every flop is counted.

A8s against 75s by flop texture, in percent
FlopShare of flopsA8s winsTies75s winsA8s equity
Rainbow, ten or higher25.22066.5320.22533.24366.645
Rainbow, nine or lower5.68945.7450.49953.75645.995
Two-tone46.72761.7590.25237.98961.885
Monotone5.27357.9533.43238.61559.669
Paired17.09165.3200.66534.01565.653

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

The table below sets each hand against its own random-hand baseline: a change of +0.77 points for A8s, from 61.94%, and -6.39 for 75s, from 43.68%.

A8s and 75s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
A8s, all flops62.70861.944+0.7641.01233
A8s, rainbow, ten or higher66.64561.944+4.7011.07589
A8s, rainbow, nine or lower45.99561.944-15.9490.74253
A8s, two-tone61.88561.944-0.0590.99905
A8s, monotone59.66961.944-2.2750.96327
A8s, paired65.65361.944+3.7091.05988
75s, all flops37.29243.676-6.3840.85383
75s, rainbow, ten or higher33.35543.676-10.3210.76369
75s, rainbow, nine or lower54.00543.676+10.3291.23649
75s, two-tone38.11543.676-5.5610.87268
75s, monotone40.33143.676-3.3450.92341
75s, paired34.34743.676-9.3290.78640

Does a shared suit matter?

Of the deals of this matchup, 4 share a suit (A8s at 65.06%) and 12 do not (61.93%). A8s does better with a shared suit, by 3.13 points.

A8s against 75s by suit overlap, in percent
DealsSpecific dealsShare of dealsA8s winsTies75s winsA8s equity
Share a suit425.0064.7690.57334.65865.056
No shared suit1275.0061.6900.47237.83861.926

How often this matchup comes up

Out of 1,624,350 ways to deal two seats two cards each, 16 are A8s in one seat and 75s in the other (0.0010%); with the seats swapped too, 32 (0.0020%).

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says A8s gets $125.42 of it on average and 75s gets $74.58.

Out of 1,000 deals you should see around 625 outright wins for A8s, 370 for 75s, and 5 split pots.

The same matchup from the other side

If you came looking for 75s against A8s, the numbers are the same with the hands swapped: 37.29% and 62.71%.

Try As8s against 7h5h 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 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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