QQ vs A8s: preflop equity

The exact count puts QQ at 67.96% and A8s at 32.04% when the two hands see all five board cards.

QQ

67.96%

Wins 67.77%, ties 0.39%

A8s

32.04%

Wins 31.84%, ties 0.39%

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

QQ against A8s: the numbers

Exact preflop results for QQ against A8s, in percent
HandWinsTiesLosesEquity
QQ67.7680.38731.84567.961
A8s31.8450.38767.76832.039

The first hand is a pocket pair; the second is a suited hand. 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.

QQ is the clear favorite, though A8s gets there on roughly one board in 3. Ties are 0.39% of the outcomes here; each tied board gives both hands half the pot.

In the ranking of all 169 starting hands, QQ is number 3 and A8s is number 21.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QQ27,849,000159,00013,087,000
A8s13,087,000159,00027,849,000

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.

QQ against A8s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QQ2.1211.4763.1400.471
A8s0.4713.1401.4762.121

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

Split by what the flop looks like, QQ peaks at 76.43% on low rainbow flops (nine high or lower) and bottoms out at 63.41% on monotone flops. QQ stays ahead on all five textures.

QQ against A8s by flop texture, in percent
FlopShare of flopsQQ winsTiesA8s winsQQ equity
Rainbow, ten or higher23.86767.2620.15132.58767.338
Rainbow, nine or lower7.04275.9500.95723.09376.428
Two-tone46.54565.9910.30933.70066.146
Monotone5.21262.2062.40035.39463.406
Paired17.33471.5830.08328.33471.625

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

Relative to a random opponent, QQ changes by -11.97 points (baseline 79.93%) and A8s by -29.90 points (baseline 61.94%).

QQ and A8s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QQ, all flops67.96179.925-11.9640.85031
QQ, rainbow, ten or higher67.33879.925-12.5870.84251
QQ, rainbow, nine or lower76.42879.925-3.4970.95625
QQ, two-tone66.14679.925-13.7790.82760
QQ, monotone63.40679.925-16.5190.79332
QQ, paired71.62579.925-8.3000.89615
A8s, all flops32.03961.944-29.9050.51723
A8s, rainbow, ten or higher32.66261.944-29.2820.52728
A8s, rainbow, nine or lower23.57261.944-38.3720.38054
A8s, two-tone33.85461.944-28.0900.54653
A8s, monotone36.59461.944-25.3500.59076
A8s, paired28.37561.944-33.5690.45808

Does a shared suit matter?

Two kinds of deal exist here. In 12 of them the hands share a suit and QQ holds 68.25%. In 12 they do not, and it holds 67.67%. QQ does better with a shared suit, by 0.58 points.

QQ against A8s by suit overlap, in percent
DealsSpecific dealsShare of dealsQQ winsTiesA8s winsQQ equity
Share a suit1250.0068.0380.42831.53468.252
No shared suit1250.0067.4980.34532.15767.670

How often this matchup comes up

QQ against A8s is made up of 24 specific-card matchups in one seat order, 0.0015% of the 1,624,350 ordered deals, and 48 counting both seat orders, 0.0030%.

A worked example

Take a $200 pot built from $100 each. QQ's equity of 67.96% is worth $135.92, a $35.92 edge, and A8s' 32.04% is worth $64.08, which is $35.92 under its stake.

Think in thousands: about 678 of 1,000 go to QQ, about 318 go to A8s, and about 4 are chopped.

The same matchup from the other side

One page covers both views. From A8s' side the equity is 32.04%, and from QQ's side it is 67.96%.

Open the calculator with QsQh against Ad8d already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking.

How this was computed

The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 24 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows.

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

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