QQ vs T9o: preflop equity

Counting every board, the equity split is 84.29% for QQ and 15.71% for T9o, so QQ leads by 68.58 points.

QQ

84.29%

Wins 84.11%, ties 0.36%

T9o

15.71%

Wins 15.53%, ties 0.36%

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

QQ against T9o: the numbers

Exact preflop results for QQ against T9o, in percent
HandWinsTiesLosesEquity
QQ84.1090.36415.52784.291
T9o15.5270.36484.10915.709

The matchup pits a pocket pair against an offsuit hand. Here a pair faces two cards that are both smaller, so the other hand needs to pair up and still be behind.

A gap this wide means T9o is in trouble before the flop and has few good runouts. Of every 100 boards, about 0.36 are split pots, and the equity figures already include them.

Among the 169 starting hands, QQ is number 3 and T9o is number 78 by strength against a random hand.

Boards behind the percentages: 123,285,888 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QQ103,695,000449,00019,143,000
T9o19,143,000449,000103,695,000

72 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand.

QQ against T9o read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QQ5.3661.1896.4400.186
T9o0.1866.4401.1895.366

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

QQ prefers paired flops, where it holds 87.73%, and likes monotone flops least, where it holds 79.27%. QQ stays ahead on all five textures.

QQ against T9o by flop texture, in percent
FlopShare of flopsQQ winsTiesT9o winsQQ equity
Rainbow, ten or higher23.98884.3370.17615.48784.425
Rainbow, nine or lower7.04282.8980.83616.26683.316
Two-tone46.48583.4860.31216.20283.642
Monotone5.15178.4241.69919.87779.273
Paired17.33487.6450.17612.17987.733

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

Each hand has a baseline against a random hand: 79.93% for QQ, 51.53% for T9o. Here the change is +4.36 and -35.82 points.

QQ and T9o here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QQ, all flops84.29179.925+4.3661.05463
QQ, rainbow, ten or higher84.42579.925+4.5001.05630
QQ, rainbow, nine or lower83.31679.925+3.3911.04243
QQ, two-tone83.64279.925+3.7171.04651
QQ, monotone79.27379.925-0.6520.99184
QQ, paired87.73379.925+7.8081.09769
T9o, all flops15.70951.532-35.8230.30484
T9o, rainbow, ten or higher15.57551.532-35.9570.30224
T9o, rainbow, nine or lower16.68451.532-34.8480.32376
T9o, two-tone16.35851.532-35.1740.31743
T9o, monotone20.72751.532-30.8050.40222
T9o, paired12.26751.532-39.2650.23805

Does a shared suit matter?

Suit overlap shows up in the numbers. With a suit in common QQ has 84.44% equity, and with none in common it has 83.57%. QQ does better with a shared suit, by 0.87 points.

QQ against T9o by suit overlap, in percent
DealsSpecific dealsShare of dealsQQ winsTiesT9o winsQQ equity
Share a suit6083.3384.2450.38015.37584.435
No shared suit1216.6783.4280.28516.28783.570

How often this matchup comes up

Out of 1,624,350 ways to deal two seats two cards each, 72 are QQ in one seat and T9o in the other (0.0044%); with the seats swapped too, 144 (0.0089%).

A worked example

Try it with money: two players each put in $100 and the whole board runs out every possible way. QQ averages $168.58 from the $200, up $68.58; T9o averages $31.42, down $68.58.

A thousand deals look like this: QQ takes 841, T9o takes 155, 4 are ties.

The same matchup from the other side

T9o against QQ adds nothing new: it is 15.71% for T9o and 84.29% for QQ, the same figures reversed.

Try QsQh against Td9c 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 72 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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