QTs vs T9s: preflop equity

Before any board card is dealt, QTs holds 69.21% equity against T9s, which leaves T9s with 30.79%.

QTs

69.21%

Wins 67.24%, ties 3.95%

T9s

30.79%

Wins 28.81%, ties 3.95%

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

QTs against T9s: the numbers

Exact preflop results for QTs against T9s, in percent
HandWinsTiesLosesEquity
QTs67.2353.95228.81369.211
T9s28.8133.95267.23530.789

Here suited hands face each other, QTs on one side and T9s on the other. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing.

QTs is well ahead, and T9s needs a specific kind of board to catch up. A split pot comes up on 3.95% of boards, so the wins and the equity differ by half of that.

The hand ranking puts QTs at 34 and T9s at 64 out of 169 starting hands.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QTs13,815,000812,0005,920,000
T9s5,920,000812,00013,815,000

Exact total: 12 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate.

QTs against T9s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QTs2.2481.4873.4710.445
T9s0.4453.4711.4872.248

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, QTs peaks at 74.13% on rainbow flops topped by a ten or better and bottoms out at 58.80% on low rainbow flops (nine high or lower). QTs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

QTs against T9s by flop texture, in percent
FlopShare of flopsQTs winsTiesT9s winsQTs equity
Rainbow, ten or higher23.86772.2463.77223.98274.132
Rainbow, nine or lower7.04257.7132.18240.10558.804
Two-tone46.54366.4673.11130.42268.023
Monotone5.21560.0745.41334.51362.781
Paired17.33368.4206.73524.84571.787

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

Start from the random-hand figures, 59.47% for QTs and 54.03% for T9s. This opponent changes them by +9.74 and -23.24 points.

QTs and T9s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QTs, all flops69.21159.468+9.7431.16384
QTs, rainbow, ten or higher74.13259.468+14.6641.24659
QTs, rainbow, nine or lower58.80459.468-0.6640.98883
QTs, two-tone68.02359.468+8.5551.14386
QTs, monotone62.78159.468+3.3131.05571
QTs, paired71.78759.468+12.3191.20715
T9s, all flops30.78954.028-23.2390.56987
T9s, rainbow, ten or higher25.86854.028-28.1600.47879
T9s, rainbow, nine or lower41.19654.028-12.8320.76249
T9s, two-tone31.97754.028-22.0510.59186
T9s, monotone37.21954.028-16.8090.68888
T9s, paired28.21354.028-25.8150.52219

Does a shared suit matter?

There is no shared-suit case for this pair, since the cards they would need are already in the other hand. Every deal is a no-shared-suit deal.

QTs against T9s by suit overlap, in percent
DealsSpecific dealsShare of dealsQTs winsTiesT9s winsQTs equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0067.2353.95228.81369.211

How often this matchup comes up

Exactly 12 specific deals fit this matchup in one seat order, which is 0.0007% of 1,624,350; both orders together give 24, or 0.0015%.

A worked example

With $100 from each side, the $200 pot is split on average as $138.42 for QTs and $61.58 for T9s; the first side gains $38.42 per all-in and the second gives up $38.42.

Out of 1,000 deals you should see around 672 outright wins for QTs, 288 for T9s, and 40 split pots.

The same matchup from the other side

T9s versus QTs is this same page seen from the other hand: 30.79% for T9s, 69.21% for QTs.

Try QsTs against Th9h 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

Each figure is a complete count over boards. Take the 12 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops.

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

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