AKs vs 53s: preflop equity

Counting every board, the equity split is 62.60% for AKs and 37.40% for 53s, so AKs leads by 25.20 points.

AKs

62.60%

Wins 62.31%, ties 0.57%

53s

37.40%

Wins 37.12%, ties 0.57%

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

AKs against 53s: the numbers

Exact preflop results for AKs against 53s, in percent
HandWinsTiesLosesEquity
AKs62.3090.57437.11762.596
53s37.1170.57462.30937.404

AKs meets 53s, and both are suited hands. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other.

The lead is steady rather than large, and the flop still has plenty of say in who wins. Split pots make up 0.57% of the boards, and both equity figures count them as half a win each.

For context, AKs sits at number 8 of 169 starting hands and 53s at number 146 when each is run against a random hand.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AKs17,071,000157,00010,169,000
53s10,169,000157,00017,071,000

Exact total: 16 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate.

AKs against 53s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AKs1.6741.6052.6940.598
53s0.5982.6941.6051.674

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

If you know the kind of flop that came, the numbers shift: AKs holds 69.17% on rainbow flops topped by a ten or better and 37.00% on low rainbow flops (nine high or lower). On low rainbow flops (nine high or lower) the numbers flip and 53s is the one ahead.

AKs against 53s by flop texture, in percent
FlopShare of flopsAKs winsTies53s winsAKs equity
Rainbow, ten or higher24.59569.0760.19430.73069.173
Rainbow, nine or lower6.31436.4591.08162.46037.000
Two-tone46.72761.5600.33538.10561.727
Monotone5.27357.9203.57138.50959.705
Paired17.09165.5220.66133.81765.853

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

Each hand has a baseline against a random hand: 67.05% for AKs, 39.69% for 53s. Here the change is -4.45 and -2.29 points.

AKs and 53s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AKs, all flops62.59667.045-4.4490.93364
AKs, rainbow, ten or higher69.17367.045+2.1281.03174
AKs, rainbow, nine or lower37.00067.045-30.0450.55187
AKs, two-tone61.72767.045-5.3180.92068
AKs, monotone59.70567.045-7.3400.89052
AKs, paired65.85367.045-1.1920.98222
53s, all flops37.40439.693-2.2890.94233
53s, rainbow, ten or higher30.82739.693-8.8660.77664
53s, rainbow, nine or lower63.00039.693+23.3071.58718
53s, two-tone38.27339.693-1.4200.96423
53s, monotone40.29539.693+0.6021.01517
53s, paired34.14739.693-5.5460.86028

Does a shared suit matter?

Split by suits, the deals give AKs 64.89% when the hands overlap in a suit and 61.83% when they do not. AKs does better with a shared suit, by 3.06 points.

AKs against 53s by suit overlap, in percent
DealsSpecific dealsShare of dealsAKs winsTies53s winsAKs equity
Share a suit425.0064.5630.65434.78364.890
No shared suit1275.0061.5580.54737.89561.831

How often this matchup comes up

AKs against 53s is made up of 16 specific-card matchups in one seat order, 0.0010% of the 1,624,350 ordered deals, and 32 counting both seat orders, 0.0020%.

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says AKs gets $125.20 of it on average and 53s gets $74.80.

Over a long run, 1,000 deals split into about 623 for AKs, 371 for 53s and 6 tied.

The same matchup from the other side

One page covers both views. From 53s' side the equity is 37.40%, and from AKs' side it is 62.60%.

The calculator link fills in AsKs against 5h3h, 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

All 1,712,304 five-card boards are dealt for every suit pattern among the 16 specific deals of AKs against 53s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.

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

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