AJs vs 44: preflop equity

Before any board card is dealt, 44 holds 50.77% equity against AJs, which leaves AJs with 49.23%.

AJs

49.23%

Wins 48.98%, ties 0.51%

44

50.77%

Wins 50.51%, ties 0.51%

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

AJs against 44: the numbers

Exact preflop results for AJs against 44, in percent
HandWinsTiesLosesEquity
AJs48.9760.50650.51849.229
4450.5180.50648.97650.771

We compare a suited hand with a pocket pair. A pair against two higher cards is the classic race: the pair is usually a small favorite or close to even, and each overcard that pairs is a way to take the lead.

That is a slim edge: neither hand is far ahead. A split pot comes up on 0.51% of boards, so the wins and the equity differ by half of that.

The hand ranking puts AJs at 11 and 44 at 48 out of 169 starting hands.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AJs20,127,000208,00020,761,000
4420,761,000208,00020,127,000

Exact total: 24 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.

AJs against 44 read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AJs0.9702.0421.9791.031
441.0311.9792.0420.970

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

Low rainbow flops (nine high or lower) are the best for 44 (76.83%); rainbow flops topped by a ten or better are the worst (45.28%). On rainbow flops topped by a ten or better and two-tone flops the numbers flip and AJs is the one ahead.

AJs against 44 by flop texture, in percent
FlopShare of flopsAJs winsTies44 winsAJs equity
Rainbow, ten or higher24.59554.6190.19545.18654.716
Rainbow, nine or lower6.31422.7090.92676.36523.172
Two-tone46.54550.3100.31849.37250.469
Monotone5.21247.9812.81649.20349.389
Paired17.33447.2570.60052.14347.557

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

Each hand has a baseline against a random hand: 65.39% for AJs, 57.02% for 44. Here the change is -16.16 and -6.25 points.

AJs and 44 here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AJs, all flops49.22965.393-16.1640.75282
AJs, rainbow, ten or higher54.71665.393-10.6770.83673
AJs, rainbow, nine or lower23.17265.393-42.2210.35435
AJs, two-tone50.46965.393-14.9240.77178
AJs, monotone49.38965.393-16.0040.75526
AJs, paired47.55765.393-17.8360.72725
44, all flops50.77157.023-6.2520.89036
44, rainbow, ten or higher45.28457.023-11.7390.79414
44, rainbow, nine or lower76.82857.023+19.8051.34732
44, two-tone49.53157.023-7.4920.86861
44, monotone50.61157.023-6.4120.88755
44, paired52.44357.023-4.5800.91968

Does a shared suit matter?

Suit overlap shows up in the numbers. With a suit in common 44 has 50.95% equity, and with none in common it has 50.59%. 44 does better with a shared suit, by 0.36 points.

AJs against 44 by suit overlap, in percent
DealsSpecific dealsShare of dealsAJs winsTies44 winsAJs equity
Share a suit1250.0048.7790.54350.67849.050
No shared suit1250.0049.1740.46850.35849.408

How often this matchup comes up

The class pair covers 24 combinations of specific cards in a fixed seat order, 0.0015% of 1,624,350, and 48 (0.0030%) in either order.

A worked example

Say each player puts $100 in before the flop, making a $200 pot. On average 44 takes back $101.54 of it, which is $1.54 more than it put in, and AJs takes back $98.46, $1.54 less than it put in.

Scaled to 1,000 deals, that is roughly 505 wins for 44, 490 for AJs and 5 chopped pots.

The same matchup from the other side

44 against AJs adds nothing new: it is 50.77% for 44 and 49.23% for AJs, the same figures reversed.

Try AsJs against 4h4d 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

Nothing here is simulated. The 24 deals of AJs against 44 fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops.

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

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