AA vs 75s: preflop equity

Before any board card is dealt, AA holds 79.02% equity against 75s, which leaves 75s with 20.98%.

AA

79.02%

Wins 78.83%, ties 0.39%

75s

20.98%

Wins 20.78%, ties 0.39%

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

AA against 75s: the numbers

Exact preflop results for AA against 75s, in percent
HandWinsTiesLosesEquity
AA78.8260.39220.78279.022
75s20.7820.39278.82620.978

AA and 75s are a pocket pair and a suited hand, in that order. Here a pair faces two cards that are both smaller, so the other hand needs to pair up and still be behind.

That is a clear edge, 79.02% to 20.98%, but 75s still wins often enough that one hand proves nothing. Ties are 0.39% of the outcomes here; each tied board gives both hands half the pot.

Among the 169 starting hands, AA is number 1 and 75s is number 124 by strength against a random hand.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AA32,394,000161,0008,540,000
75s8,540,000161,00032,394,000

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.

AA against 75s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AA3.7671.2694.8120.265
75s0.2654.8121.2693.767

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

AA prefers rainbow flops topped by a ten or better, where it holds 84.62%, and likes low rainbow flops (nine high or lower) least, where it holds 64.62%. AA stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

AA against 75s by flop texture, in percent
FlopShare of flopsAA winsTies75s winsAA equity
Rainbow, ten or higher24.59584.4890.25115.26084.615
Rainbow, nine or lower6.31464.2400.75535.00564.618
Two-tone46.54576.9140.33322.75377.080
Monotone5.21272.4912.43625.07373.709
Paired17.33483.1420.00716.85183.146

Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank.

Compared with a random hand

Compared with a random opponent, this matchup shifts AA from 85.20% by -6.18 points and 75s from 43.68% by -22.70 points.

AA and 75s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AA, all flops79.02285.204-6.1820.92744
AA, rainbow, ten or higher84.61585.204-0.5890.99309
AA, rainbow, nine or lower64.61885.204-20.5860.75839
AA, two-tone77.08085.204-8.1240.90465
AA, monotone73.70985.204-11.4950.86509
AA, paired83.14685.204-2.0580.97585
75s, all flops20.97843.676-22.6980.48031
75s, rainbow, ten or higher15.38543.676-28.2910.35225
75s, rainbow, nine or lower35.38243.676-8.2940.81010
75s, two-tone22.92043.676-20.7560.52477
75s, monotone26.29143.676-17.3850.60196
75s, paired16.85443.676-26.8220.38589

Does a shared suit matter?

Of the deals of this matchup, 12 share a suit (AA at 79.60%) and 12 do not (78.45%). AA does better with a shared suit, by 1.15 points.

AA against 75s by suit overlap, in percent
DealsSpecific dealsShare of dealsAA winsTies75s winsAA equity
Share a suit1250.0079.3790.43420.18779.596
No shared suit1250.0078.2730.35121.37678.448

How often this matchup comes up

Exactly 24 specific deals fit this matchup in one seat order, which is 0.0015% of 1,624,350; both orders together give 48, or 0.0030%.

A worked example

Try it with money: two players each put in $100 and the whole board runs out every possible way. AA averages $158.04 from the $200, up $58.04; 75s averages $41.96, down $58.04.

Over a long run, 1,000 deals split into about 788 for AA, 208 for 75s and 4 tied.

The same matchup from the other side

One page covers both views. From 75s' side the equity is 20.98%, and from AA's side it is 79.02%.

The calculator link fills in AsAh against 7d5d, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength.

How this was computed

The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 24 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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