A9o vs QTs: preflop equity

Averaged over every possible board, A9o is ahead of QTs by 7.38 points of equity, 53.69% to 46.31%.

A9o

53.69%

Wins 53.47%, ties 0.44%

QTs

46.31%

Wins 46.09%, ties 0.44%

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

A9o against QTs: the numbers

Exact preflop results for A9o against QTs, in percent
HandWinsTiesLosesEquity
A9o53.4700.44246.08853.691
QTs46.0880.44253.47046.309

One side is an offsuit hand, the other is a suited hand. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances.

With only 7.38 points between them, the board decides this matchup far more than the cards in hand. Split pots make up 0.44% of the boards, and both equity figures count them as half a win each.

In the ranking of all 169 starting hands, A9o is number 25 and QTs is number 34.

Boards behind the percentages: 82,190,592 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
A9o43,947,000363,00037,880,000
QTs37,880,000363,00043,947,000

The total is exact: 48 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.

A9o against QTs read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
A9o1.1591.8702.1700.863
QTs0.8632.1701.8701.159

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

Across the five flop textures A9o's equity moves by 22.01 points, from 48.99% on rainbow flops topped by a ten or better to 71.00% on low rainbow flops (nine high or lower). QTs is ahead on rainbow flops topped by a ten or better, even though it trails A9o when every flop is counted.

A9o against QTs by flop texture, in percent
FlopShare of flopsA9o winsTiesQTs winsA9o equity
Rainbow, ten or higher23.98848.9190.14650.93548.992
Rainbow, nine or lower7.04270.6130.77028.61770.998
Two-tone46.66751.3160.26548.41951.449
Monotone5.21250.7022.36746.93151.885
Paired17.09159.5190.62039.86159.829

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

Against one random hand instead, A9o holds 60.77% and QTs holds 59.47%. Facing each other changes that by -7.08 points for A9o and -13.16 points for QTs.

A9o and QTs here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
A9o, all flops53.69160.773-7.0820.88347
A9o, rainbow, ten or higher48.99260.773-11.7810.80615
A9o, rainbow, nine or lower70.99860.773+10.2251.16825
A9o, two-tone51.44960.773-9.3240.84658
A9o, monotone51.88560.773-8.8880.85375
A9o, paired59.82960.773-0.9440.98447
QTs, all flops46.30959.468-13.1590.77872
QTs, rainbow, ten or higher51.00859.468-8.4600.85774
QTs, rainbow, nine or lower29.00259.468-30.4660.48769
QTs, two-tone48.55159.468-10.9170.81642
QTs, monotone48.11559.468-11.3530.80909
QTs, paired40.17159.468-19.2970.67551

Does a shared suit matter?

When the hands share a suit, A9o holds 54.12%; when they do not, it holds 53.26%. A9o does better with a shared suit, by 0.86 points.

A9o against QTs by suit overlap, in percent
DealsSpecific dealsShare of dealsA9o winsTiesQTs winsA9o equity
Share a suit2450.0053.8830.48345.63454.124
No shared suit2450.0053.0570.40146.54253.258

How often this matchup comes up

A9o against QTs is made up of 48 specific-card matchups in one seat order, 0.0030% of the 1,624,350 ordered deals, and 96 counting both seat orders, 0.0059%.

A worked example

Worked example: both players commit $100, so $200 sits in the middle. Over every board, A9o's average share is $107.38 (a gain of $7.38) and QTs' is $92.62 (a loss of $7.38).

A thousand deals look like this: A9o takes 535, QTs takes 461, 4 are ties.

The same matchup from the other side

The mirror image, QTs against A9o, is 46.31% to 53.69%, and its address redirects to this page.

The calculator link fills in As9h against QdTd, 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

Method: exact enumeration. The 48 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.

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