AJo vs A4s: preflop equity

In equity, AJo against A4s stands at 67.48% to 32.52%, a gap of 34.96 points.

AJo

67.48%

Wins 63.66%, ties 7.64%

A4s

32.52%

Wins 28.70%, ties 7.64%

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

AJo against A4s: the numbers

Exact preflop results for AJo against A4s, in percent
HandWinsTiesLosesEquity
AJo63.6627.63628.70267.480
A4s28.7027.63663.66232.520

We compare an offsuit hand with a suited hand. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing.

AJo is the clear favorite, though A4s gets there on roughly one board in 3. Of every 100 boards, about 7.64 are split pots, and the equity figures already include them.

Place 15 of 169 belongs to AJo and place 35 belongs to A4s in the ranking against a random hand.

Boards behind the percentages: 61,642,944 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AJo39,243,0004,707,00017,693,000
A4s17,693,0004,707,00039,243,000

The board total is exact, 36 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.

AJo against A4s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AJo2.0751.5713.4840.482
A4s0.4823.4841.5712.075

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

AJo prefers rainbow flops topped by a ten or better, where it holds 74.89%, and likes low rainbow flops (nine high or lower) least, where it holds 54.07%. AJo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

AJo against A4s by flop texture, in percent
FlopShare of flopsAJo winsTiesA4s winsAJo equity
Rainbow, ten or higher23.90572.0645.65522.28174.891
Rainbow, nine or lower7.04251.9444.25643.80054.072
Two-tone46.52763.9985.06630.93666.531
Monotone5.19259.9385.99434.06862.935
Paired17.33457.05219.13023.81866.617

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

Start from the random-hand figures, 63.56% for AJo and 59.03% for A4s. This opponent changes them by +3.92 and -26.51 points.

AJo and A4s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AJo, all flops67.48063.563+3.9171.06162
AJo, rainbow, ten or higher74.89163.563+11.3281.17822
AJo, rainbow, nine or lower54.07263.563-9.4910.85068
AJo, two-tone66.53163.563+2.9681.04669
AJo, monotone62.93563.563-0.6280.99012
AJo, paired66.61763.563+3.0541.04805
A4s, all flops32.52059.034-26.5140.55087
A4s, rainbow, ten or higher25.10959.034-33.9250.42533
A4s, rainbow, nine or lower45.92859.034-13.1060.77799
A4s, two-tone33.46959.034-25.5650.56694
A4s, monotone37.06559.034-21.9690.62786
A4s, paired33.38359.034-25.6510.56549

Does a shared suit matter?

The suit split reads 68.29% for AJo with a shared suit and 67.08% without one. AJo does better with a shared suit, by 1.21 points.

AJo against A4s by suit overlap, in percent
DealsSpecific dealsShare of dealsAJo winsTiesA4s winsAJo equity
Share a suit1233.3364.4157.74527.84068.288
No shared suit2466.6763.2867.58129.13367.076

How often this matchup comes up

AJo against A4s is made up of 36 specific-card matchups in one seat order, 0.0022% of the 1,624,350 ordered deals, and 72 counting both seat orders, 0.0044%.

A worked example

Put $100 each into a $200 pot and deal every board once: AJo averages $134.96 back, ahead of its $100 by $34.96, while A4s averages $65.04, short of its $100 by $34.96.

Think in thousands: about 637 of 1,000 go to AJo, about 287 go to A4s, and about 76 are chopped.

The same matchup from the other side

Read it from the other side: A4s against AJo is the same matchup with the numbers swapped, so A4s holds 32.52% and AJo holds 67.48%. That address sends you back to this page.

The calculator link fills in AsJh against Ad4d, 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 36 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.

Bring your own hands to a session

Review the spots you actually play against these numbers in a Game Assessment, and leave with a one-page written plan.

Book a session