A2s vs 33: preflop equity

If 33 and A2s get all the chips in before the flop, 33 owns 65.35% of the pot in the long run and A2s owns 34.65%.

A2s

34.65%

Wins 34.33%, ties 0.65%

33

65.35%

Wins 65.02%, ties 0.65%

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

A2s against 33: the numbers

Exact preflop results for A2s against 33, in percent
HandWinsTiesLosesEquity
A2s34.3260.64765.02734.650
3365.0270.64734.32665.350

We compare a suited hand with a pocket pair. One of the other hand's cards outranks the pair and one is below it, which makes this a closer race than a pair against two small cards.

33 is well ahead, and A2s needs a specific kind of board to catch up. Of every 100 boards, about 0.65 are split pots, and the equity figures already include them.

In the ranking of all 169 starting hands, A2s is number 46 and 33 is number 66.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
A2s14,106,000266,00026,723,000
3326,723,000266,00014,106,000

The total is exact: 24 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand.

A2s against 33 read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
A2s0.5302.9131.5381.886
331.8861.5382.9130.530

The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity.

Who is ahead on which flops

If you know the kind of flop that came, the numbers shift: 33 holds 80.73% on low rainbow flops (nine high or lower) and 60.95% on paired flops. 33 stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

A2s against 33 by flop texture, in percent
FlopShare of flopsA2s winsTies33 winsA2s equity
Rainbow, ten or higher25.22034.0770.29165.63234.222
Rainbow, nine or lower5.68918.6091.31680.07519.267
Two-tone46.54534.5430.43365.02434.759
Monotone5.21236.2703.23760.49337.888
Paired17.33438.6830.73860.57939.052

A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank.

Compared with a random hand

Start from the random-hand figures, 57.38% for A2s and 53.69% for 33. This opponent changes them by -22.73 and +11.66 points.

A2s and 33 here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
A2s, all flops34.65057.379-22.7290.60388
A2s, rainbow, ten or higher34.22257.379-23.1570.59642
A2s, rainbow, nine or lower19.26757.379-38.1120.33578
A2s, two-tone34.75957.379-22.6200.60578
A2s, monotone37.88857.379-19.4910.66031
A2s, paired39.05257.379-18.3270.68060
33, all flops65.35053.693+11.6571.21710
33, rainbow, ten or higher65.77853.693+12.0851.22508
33, rainbow, nine or lower80.73353.693+27.0401.50360
33, two-tone65.24153.693+11.5481.21507
33, monotone62.11253.693+8.4191.15680
33, paired60.94853.693+7.2551.13512

Does a shared suit matter?

When the hands share a suit, 33 holds 65.64%; when they do not, it holds 65.06%. 33 does better with a shared suit, by 0.58 points.

A2s against 33 by suit overlap, in percent
DealsSpecific dealsShare of dealsA2s winsTies33 winsA2s equity
Share a suit1250.0034.0250.67665.29934.363
No shared suit1250.0034.6280.61764.75534.937

How often this matchup comes up

How often does it happen? 24 of the 1,624,350 ordered deals (0.0015%) are A2s against 33, and 48 (0.0030%) if either hand may sit in either seat.

A worked example

Say each player puts $100 in before the flop, making a $200 pot. On average 33 takes back $130.70 of it, which is $30.70 more than it put in, and A2s takes back $69.30, $30.70 less than it put in.

Run 1,000 deals and the tally comes out near 650 for 33, 343 for A2s and 7 ties.

The same matchup from the other side

33 versus A2s is this same page seen from the other hand: 65.35% for 33, 34.65% for A2s.

Try As2s against 3h3d 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

We counted every case. Each suit pattern of the 24 specific A2s against 33 deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops.

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

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