T9o vs 54s: preflop equity

If T9o and 54s get all the chips in before the flop, T9o owns 61.50% of the pot in the long run and 54s owns 38.50%.

T9o

61.50%

Wins 60.61%, ties 1.78%

54s

38.50%

Wins 37.61%, ties 1.78%

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

T9o against 54s: the numbers

Exact preflop results for T9o against 54s, in percent
HandWinsTiesLosesEquity
T9o60.6071.77837.61561.496
54s37.6151.77860.60738.504

We compare an offsuit hand with a suited hand. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits.

T9o is ahead, but 54s is far from dead: it takes 376 of every 1,000 deals outright. About 1.78% of boards chop the pot, which is why equity sits slightly above the win figure for both hands.

The hand ranking puts T9o at 78 and 54s at 136 out of 169 starting hands.

Boards behind the percentages: 82,190,592 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
T9o49,813,0001,461,00030,916,000
54s30,916,0001,461,00049,813,000

The board total is exact, 48 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.

T9o against 54s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
T9o1.5971.6502.6590.626
54s0.6262.6591.6501.597

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, T9o peaks at 66.16% on rainbow flops topped by a ten or better and bottoms out at 50.42% on low rainbow flops (nine high or lower). T9o stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

T9o against 54s by flop texture, in percent
FlopShare of flopsT9o winsTies54s winsT9o equity
Rainbow, ten or higher25.34165.5801.16733.25366.163
Rainbow, nine or lower5.68950.1170.61349.27050.423
Two-tone46.66759.8051.00239.19360.306
Monotone5.21258.1733.00038.82759.673
Paired17.09159.6584.81635.52662.066

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

The table below sets each hand against its own random-hand baseline: a change of +9.97 points for T9o, from 51.53%, and -2.95 for 54s, from 41.45%.

T9o and 54s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
T9o, all flops61.49651.532+9.9641.19336
T9o, rainbow, ten or higher66.16351.532+14.6311.28392
T9o, rainbow, nine or lower50.42351.532-1.1090.97848
T9o, two-tone60.30651.532+8.7741.17026
T9o, monotone59.67351.532+8.1411.15798
T9o, paired62.06651.532+10.5341.20442
54s, all flops38.50441.453-2.9490.92886
54s, rainbow, ten or higher33.83741.453-7.6160.81627
54s, rainbow, nine or lower49.57741.453+8.1241.19598
54s, two-tone39.69441.453-1.7590.95757
54s, monotone40.32741.453-1.1260.97284
54s, paired37.93441.453-3.5190.91511

Does a shared suit matter?

Does suit overlap move the numbers? T9o has 62.22% when the hands share a suit and 60.77% when they do not. T9o does better with a shared suit, by 1.45 points.

T9o against 54s by suit overlap, in percent
DealsSpecific dealsShare of dealsT9o winsTies54s winsT9o equity
Share a suit2450.0061.3071.82236.87162.218
No shared suit2450.0059.9071.73438.35960.774

How often this matchup comes up

T9o against 54s is made up of 48 specific-card matchups in one seat order, 0.0030% of the 1,624,350 ordered deals, and 96 counting both seat orders, 0.0059%.

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says T9o gets $123.00 of it on average and 54s gets $77.00.

Over a long run, 1,000 deals split into about 606 for T9o, 376 for 54s and 18 tied.

The same matchup from the other side

The reversed view, 54s against T9o, shows 38.50% for 54s and 61.50% for T9o. It is the same count, so it redirects here.

Ts9h against 5d4d 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

Each figure is a complete count over boards. Take the 48 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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