JJ vs A5s: preflop equity

In equity, JJ against A5s stands at 66.69% to 33.31%, a gap of 33.38 points.

JJ

66.69%

Wins 66.48%, ties 0.41%

A5s

33.31%

Wins 33.11%, ties 0.41%

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

JJ against A5s: the numbers

Exact preflop results for JJ against A5s, in percent
HandWinsTiesLosesEquity
JJ66.4820.41133.10766.687
A5s33.1070.41166.48233.313

The matchup pits a pocket pair against a suited hand. The pair sits between the other hand's two cards: one is higher and one is lower, so the pair is exposed to the higher card.

That is a clear edge, 66.69% to 33.31%, but A5s still wins often enough that one hand proves nothing. A split pot comes up on 0.41% of boards, so the wins and the equity differ by half of that.

For context, JJ sits at number 4 of 169 starting hands and A5s at number 30 when each is run against a random hand.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
JJ27,321,000169,00013,605,000
A5s13,605,000169,00027,321,000

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.

JJ against A5s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
JJ2.0021.5043.0210.500
A5s0.5003.0211.5042.002

The final column gives the least the pot must offer for each unit called for a call to break even at this equity.

Who is ahead on which flops

By flop texture, JJ's equity runs from 62.53% on monotone flops up to 71.24% on low rainbow flops (nine high or lower). JJ stays ahead on all five textures.

JJ against A5s by flop texture, in percent
FlopShare of flopsJJ winsTiesA5s winsJJ equity
Rainbow, ten or higher23.86766.9780.14932.87367.053
Rainbow, nine or lower7.04270.7281.01828.25471.237
Two-tone46.54564.7080.32434.96864.870
Monotone5.21261.3232.41636.26162.531
Paired17.33470.3900.15629.45470.468

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

The table below sets each hand against its own random-hand baseline: a change of -10.78 points for JJ, from 77.47%, and -26.61 for A5s, from 59.92%.

JJ and A5s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
JJ, all flops66.68777.469-10.7820.86082
JJ, rainbow, ten or higher67.05377.469-10.4160.86555
JJ, rainbow, nine or lower71.23777.469-6.2320.91955
JJ, two-tone64.87077.469-12.5990.83737
JJ, monotone62.53177.469-14.9380.80717
JJ, paired70.46877.469-7.0010.90963
A5s, all flops33.31359.923-26.6100.55593
A5s, rainbow, ten or higher32.94759.923-26.9760.54982
A5s, rainbow, nine or lower28.76359.923-31.1600.48000
A5s, two-tone35.13059.923-24.7930.58625
A5s, monotone37.46959.923-22.4540.62529
A5s, paired29.53259.923-30.3910.49283

Does a shared suit matter?

Does suit overlap move the numbers? JJ has 66.97% when the hands share a suit and 66.40% when they do not. JJ does better with a shared suit, by 0.57 points.

JJ against A5s by suit overlap, in percent
DealsSpecific dealsShare of dealsJJ winsTiesA5s winsJJ equity
Share a suit1250.0066.7440.45432.80266.971
No shared suit1250.0066.2210.36733.41266.404

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

Put $100 each into a $200 pot and deal every board once: JJ averages $133.38 back, ahead of its $100 by $33.38, while A5s averages $66.62, short of its $100 by $33.38.

Think in thousands: about 665 of 1,000 go to JJ, about 331 go to A5s, and about 4 are chopped.

The same matchup from the other side

Read it from the other side: A5s against JJ is the same matchup with the numbers swapped, so A5s holds 33.31% and JJ holds 66.69%. That address sends you back to this page.

Try JsJh against Ad5d 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

Method: exact enumeration. The 24 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board.

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