QJo vs Q9s: preflop equity

Averaged over every possible board, QJo is ahead of Q9s by 37.62 points of equity, 68.81% to 31.19%.

QJo

68.81%

Wins 65.05%, ties 7.52%

Q9s

31.19%

Wins 27.43%, ties 7.52%

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

QJo against Q9s: the numbers

Exact preflop results for QJo against Q9s, in percent
HandWinsTiesLosesEquity
QJo65.0507.52127.42968.810
Q9s27.4297.52165.05031.190

We compare an offsuit hand with a suited hand. The two hands share a rank, and the one with the better other card dominates: it wins most kicker battles when that shared rank hits.

A lead of 37.62 points is large but not decisive: Q9s still takes about 274 of every 1,000 deals. The tie share is 7.52%: on those boards the pot is chopped and neither hand wins outright.

QJo ranks number 39 of 169 starting hands, and Q9s ranks number 43, by equity against a random hand.

Boards behind the percentages: 61,642,944 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QJo40,099,0004,636,00016,908,000
Q9s16,908,0004,636,00040,099,000

The board total is exact, 36 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.

QJo against Q9s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QJo2.2061.5373.6460.453
Q9s0.4533.6461.5372.206

The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call.

Who is ahead on which flops

By flop texture, QJo's equity runs from 60.72% on low rainbow flops (nine high or lower) up to 75.08% on rainbow flops topped by a ten or better. QJo stays ahead on all five textures.

QJo against Q9s by flop texture, in percent
FlopShare of flopsQJo winsTiesQ9s winsQJo equity
Rainbow, ten or higher23.90572.0436.06521.89275.075
Rainbow, nine or lower7.04259.2772.89337.83060.723
Two-tone46.52765.5375.06429.39968.069
Monotone5.19260.9595.96633.07563.942
Paired17.33457.66718.47223.86166.903

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

How much does the opponent matter? Compared with its random-hand 58.14%, QJo changes by +10.67 points, and Q9s, from 57.66%, by -26.47.

QJo and Q9s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QJo, all flops68.81058.135+10.6751.18362
QJo, rainbow, ten or higher75.07558.135+16.9401.29139
QJo, rainbow, nine or lower60.72358.135+2.5881.04452
QJo, two-tone68.06958.135+9.9341.17088
QJo, monotone63.94258.135+5.8071.09989
QJo, paired66.90358.135+8.7681.15082
Q9s, all flops31.19057.664-26.4740.54089
Q9s, rainbow, ten or higher24.92557.664-32.7390.43225
Q9s, rainbow, nine or lower39.27757.664-18.3870.68114
Q9s, two-tone31.93157.664-25.7330.55374
Q9s, monotone36.05857.664-21.6060.62531
Q9s, paired33.09757.664-24.5670.57396

Does a shared suit matter?

When the hands share a suit, QJo holds 69.53%; when they do not, it holds 68.45%. QJo does better with a shared suit, by 1.08 points.

QJo against Q9s by suit overlap, in percent
DealsSpecific dealsShare of dealsQJo winsTiesQ9s winsQJo equity
Share a suit1233.3365.7087.63726.65569.526
No shared suit2466.6764.7217.46327.81668.452

How often this matchup comes up

Out of 1,624,350 ways to deal two seats two cards each, 36 are QJo in one seat and Q9s in the other (0.0022%); with the seats swapped too, 72 (0.0044%).

A worked example

Say each player puts $100 in before the flop, making a $200 pot. On average QJo takes back $137.62 of it, which is $37.62 more than it put in, and Q9s takes back $62.38, $37.62 less than it put in.

Run 1,000 deals and the tally comes out near 651 for QJo, 274 for Q9s and 75 ties.

The same matchup from the other side

The mirror image, Q9s against QJo, is 31.19% to 68.81%, and its address redirects to this page.

QsJh against Qd9d is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength.

How this was computed

Nothing here is simulated. The 36 deals of QJo against Q9s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops.

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

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