QQ vs 97s: preflop equity

Over all 1,712,304 boards that can follow this deal, QQ finishes with 79.38% of the pot and 97s with 20.62%.

QQ

79.38%

Wins 79.20%, ties 0.37%

97s

20.62%

Wins 20.43%, ties 0.37%

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

QQ against 97s: the numbers

Exact preflop results for QQ against 97s, in percent
HandWinsTiesLosesEquity
QQ79.1990.37020.43179.384
97s20.4310.37079.19920.616

We compare a pocket pair with a suited hand. The pair outranks both of the other hand's cards, which is why the pair is a strong favorite.

QQ is well ahead, and 97s needs a specific kind of board to catch up. Ties are 0.37% of the outcomes here; each tied board gives both hands half the pot.

Place 3 of 169 belongs to QQ and place 94 belongs to 97s in the ranking against a random hand.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QQ32,547,000152,0008,396,000
97s8,396,000152,00032,547,000

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 97s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QQ3.8511.2634.8950.260
97s0.2604.8951.2633.851

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

Split by what the flop looks like, QQ peaks at 83.47% on rainbow flops topped by a ten or better and bottoms out at 71.33% on low rainbow flops (nine high or lower). QQ stays ahead on all five textures.

QQ against 97s by flop texture, in percent
FlopShare of flopsQQ winsTies97s winsQQ equity
Rainbow, ten or higher24.59583.3780.19216.43083.474
Rainbow, nine or lower6.31471.0020.66128.33771.332
Two-tone46.54577.3780.27022.35277.513
Monotone5.21272.8382.38024.78274.028
Paired17.33483.0590.17616.76583.147

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

The table below sets each hand against its own random-hand baseline: a change of -0.55 points for QQ, from 79.93%, and -28.50 for 97s, from 49.12%.

QQ and 97s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QQ, all flops79.38479.925-0.5410.99323
QQ, rainbow, ten or higher83.47479.925+3.5491.04440
QQ, rainbow, nine or lower71.33279.925-8.5930.89249
QQ, two-tone77.51379.925-2.4120.96982
QQ, monotone74.02879.925-5.8970.92622
QQ, paired83.14779.925+3.2221.04031
97s, all flops20.61649.118-28.5020.41972
97s, rainbow, ten or higher16.52649.118-32.5920.33646
97s, rainbow, nine or lower28.66849.118-20.4500.58366
97s, two-tone22.48749.118-26.6310.45782
97s, monotone25.97249.118-23.1460.52877
97s, paired16.85349.118-32.2650.34311

Does a shared suit matter?

Suit overlap shows up in the numbers. With a suit in common QQ has 79.96% equity, and with none in common it has 78.81%. QQ does better with a shared suit, by 1.15 points.

QQ against 97s by suit overlap, in percent
DealsSpecific dealsShare of dealsQQ winsTies97s winsQQ equity
Share a suit1250.0079.7570.41219.83179.963
No shared suit1250.0078.6410.32721.03278.805

How often this matchup comes up

Exactly 24 specific deals fit this matchup in one seat order, which is 0.0015% of 1,624,350; both orders together give 48, or 0.0030%.

A worked example

Say each player puts $100 in before the flop, making a $200 pot. On average QQ takes back $158.76 of it, which is $58.76 more than it put in, and 97s takes back $41.24, $58.76 less than it put in.

Think in thousands: about 792 of 1,000 go to QQ, about 204 go to 97s, and about 4 are chopped.

The same matchup from the other side

The reversed view, 97s against QQ, shows 20.62% for 97s and 79.38% for QQ. It is the same count, so it redirects here.

Open the calculator with QsQh against 9d7d 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

We counted every case. Each suit pattern of the 24 specific QQ against 97s 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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