QTo vs 75s: preflop equity

Before any board card is dealt, QTo holds 61.27% equity against 75s, which leaves 75s with 38.73%.

QTo

61.27%

Wins 60.81%, ties 0.90%

75s

38.73%

Wins 38.29%, ties 0.90%

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

QTo against 75s: the numbers

Exact preflop results for QTo against 75s, in percent
HandWinsTiesLosesEquity
QTo60.8140.90238.28461.265
75s38.2840.90260.81438.735

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.

A 22.54 point lead is real, and 75s still takes about 383 of every 1,000 deals outright. Ties are part of the picture: 0.90% of boards end in a split pot, and each side counts that as half a win.

Ranked by equity against a random hand, QTo is number 47 of the 169 starting hands and 75s is number 124.

Boards behind the percentages: 82,190,592 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QTo49,983,000741,00031,466,000
75s31,466,000741,00049,983,000

48 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.

QTo against 75s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QTo1.5821.6442.6120.632
75s0.6322.6121.6441.582

In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity.

Who is ahead on which flops

QTo prefers rainbow flops topped by a ten or better, where it holds 69.79%, and likes low rainbow flops (nine high or lower) least, where it holds 35.57%. The lead reverses on low rainbow flops (nine high or lower): there 75s is the favorite even though QTo is ahead overall.

QTo against 75s by flop texture, in percent
FlopShare of flopsQTo winsTies75s winsQTo equity
Rainbow, ten or higher24.71769.5450.49529.96069.792
Rainbow, nine or lower6.31335.2890.56464.14735.571
Two-tone46.66759.6640.48039.85659.904
Monotone5.21258.1202.55439.32659.397
Paired17.09161.5802.26236.15862.711

Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank.

Compared with a random hand

Each hand has a baseline against a random hand: 57.29% for QTo, 43.68% for 75s. Here the change is +3.98 and -4.95 points.

QTo and 75s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QTo, all flops61.26557.291+3.9741.06937
QTo, rainbow, ten or higher69.79257.291+12.5011.21820
QTo, rainbow, nine or lower35.57157.291-21.7200.62088
QTo, two-tone59.90457.291+2.6131.04561
QTo, monotone59.39757.291+2.1061.03676
QTo, paired62.71157.291+5.4201.09460
75s, all flops38.73543.676-4.9410.88687
75s, rainbow, ten or higher30.20843.676-13.4680.69164
75s, rainbow, nine or lower64.42943.676+20.7531.47516
75s, two-tone40.09643.676-3.5800.91803
75s, monotone40.60343.676-3.0730.92964
75s, paired37.28943.676-6.3870.85376

Does a shared suit matter?

Split by suits, the deals give QTo 61.99% when the hands overlap in a suit and 60.54% when they do not. QTo does better with a shared suit, by 1.45 points.

QTo against 75s by suit overlap, in percent
DealsSpecific dealsShare of dealsQTo winsTies75s winsQTo equity
Share a suit2450.0061.5170.94537.53861.990
No shared suit2450.0060.1110.85939.03060.541

How often this matchup comes up

Exactly 48 specific deals fit this matchup in one seat order, which is 0.0030% of 1,624,350; both orders together give 96, or 0.0059%.

A worked example

With $100 from each side, the $200 pot is split on average as $122.54 for QTo and $77.46 for 75s; the first side gains $22.54 per all-in and the second gives up $22.54.

Per 1,000 deals: QTo wins about 608, 75s wins about 383, and about 9 end in a split pot.

The same matchup from the other side

75s versus QTo is this same page seen from the other hand: 38.73% for 75s, 61.27% for QTo.

The calculator link fills in QsTh against 7d5d, 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

All 1,712,304 five-card boards are dealt for every suit pattern among the 48 specific deals of QTo against 75s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.

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

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