AKs vs 54s: preflop equity

Over all 1,712,304 boards that can follow this deal, AKs finishes with 61.34% of the pot and 54s with 38.66%.

AKs

61.34%

Wins 61.06%, ties 0.56%

54s

38.66%

Wins 38.38%, ties 0.56%

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

AKs against 54s: the numbers

Exact preflop results for AKs against 54s, in percent
HandWinsTiesLosesEquity
AKs61.0560.56438.38061.338
54s38.3800.56461.05638.662

Both hands are suited hands: AKs and 54s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances.

A 22.68 point lead is real, and 54s still takes about 384 of every 1,000 deals outright. Ties are 0.56% of the outcomes here; each tied board gives both hands half the pot.

Ranked by equity against a random hand, AKs is number 8 of the 169 starting hands and 54s is number 136.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AKs16,727,000155,00010,515,000
54s10,515,000155,00016,727,000

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.

AKs against 54s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AKs1.5871.6382.6060.630
54s0.6302.6061.6381.587

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

By flop texture, AKs' equity runs from 34.91% on low rainbow flops (nine high or lower) up to 67.91% on rainbow flops topped by a ten or better. The lead reverses on low rainbow flops (nine high or lower): there 54s is the favorite even though AKs is ahead overall.

AKs against 54s by flop texture, in percent
FlopShare of flopsAKs winsTies54s winsAKs equity
Rainbow, ten or higher24.59567.8110.19431.99567.908
Rainbow, nine or lower6.31434.4021.01564.58334.909
Two-tone46.72760.2970.32539.37860.460
Monotone5.27356.9763.55939.46558.756
Paired17.09164.5170.65734.82664.845

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

A random hand would give AKs 67.05% and 54s 41.45%. Against each other the change is -5.71 points for AKs and -2.79 for 54s.

AKs and 54s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AKs, all flops61.33867.045-5.7070.91488
AKs, rainbow, ten or higher67.90867.045+0.8631.01287
AKs, rainbow, nine or lower34.90967.045-32.1360.52068
AKs, two-tone60.46067.045-6.5850.90178
AKs, monotone58.75667.045-8.2890.87637
AKs, paired64.84567.045-2.2000.96719
54s, all flops38.66241.453-2.7910.93267
54s, rainbow, ten or higher32.09241.453-9.3610.77418
54s, rainbow, nine or lower65.09141.453+23.6381.57024
54s, two-tone39.54041.453-1.9130.95385
54s, monotone41.24441.453-0.2090.99496
54s, paired35.15541.453-6.2980.84807

Does a shared suit matter?

When the hands share a suit, AKs holds 63.48%; when they do not, it holds 60.62%. AKs does better with a shared suit, by 2.86 points.

AKs against 54s by suit overlap, in percent
DealsSpecific dealsShare of dealsAKs winsTies54s winsAKs equity
Share a suit425.0063.1590.64436.19763.481
No shared suit1275.0060.3550.53739.10860.624

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

Take a $200 pot built from $100 each. AKs' equity of 61.34% is worth $122.68, a $22.68 edge, and 54s' 38.66% is worth $77.32, which is $22.68 under its stake.

Over a long run, 1,000 deals split into about 610 for AKs, 384 for 54s and 6 tied.

The same matchup from the other side

If you came looking for 54s against AKs, the numbers are the same with the hands swapped: 38.66% and 61.34%.

The calculator link fills in AsKs against 5h4h, 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 54s, 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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