98s vs 75s: preflop equity

In equity, 98s against 75s stands at 64.72% to 35.28%, a gap of 29.44 points.

98s

64.72%

Wins 63.34%, ties 2.75%

75s

35.28%

Wins 33.91%, ties 2.75%

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

98s against 75s: the numbers

Exact preflop results for 98s against 75s, in percent
HandWinsTiesLosesEquity
98s63.3422.74633.91264.715
75s33.9122.74663.34235.285

The matchup is suited hands on both sides, 98s against 75s. Neither hand shares a rank with the other, so this is a contest of high cards, connection and suits.

A 29.44 point lead is real, and 75s still takes about 339 of every 1,000 deals outright. 2.75% of boards are ties, so the equity of each hand is its win rate plus half of that.

The hand ranking puts 98s at 83 and 75s at 124 out of 169 starting hands.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
98s17,354,000752,0009,291,000
75s9,291,000752,00017,354,000

Exact total: 16 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.

98s against 75s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
98s1.8341.5792.9490.545
75s0.5452.9491.5791.834

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

98s prefers rainbow flops topped by a ten or better, where it holds 67.41%, and likes low rainbow flops (nine high or lower) least, where it holds 57.30%. 98s stays ahead on all five textures.

98s against 75s by flop texture, in percent
FlopShare of flops98s winsTies75s wins98s equity
Rainbow, ten or higher25.84466.3662.07931.55567.406
Rainbow, nine or lower5.06557.1290.33442.53757.296
Two-tone46.72763.6961.60734.69764.500
Monotone5.27359.6534.31736.03061.812
Paired17.09160.7787.09732.12564.326

Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank.

Compared with a random hand

How much does the opponent matter? Compared with its random-hand 50.80%, 98s changes by +13.92 points, and 75s, from 43.68%, by -8.40.

98s and 75s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
98s, all flops64.71550.801+13.9141.27389
98s, rainbow, ten or higher67.40650.801+16.6051.32686
98s, rainbow, nine or lower57.29650.801+6.4951.12785
98s, two-tone64.50050.801+13.6991.26966
98s, monotone61.81250.801+11.0111.21675
98s, paired64.32650.801+13.5251.26623
75s, all flops35.28543.676-8.3910.80788
75s, rainbow, ten or higher32.59443.676-11.0820.74627
75s, rainbow, nine or lower42.70443.676-0.9720.97775
75s, two-tone35.50043.676-8.1760.81280
75s, monotone38.18843.676-5.4880.87435
75s, paired35.67443.676-8.0020.81679

Does a shared suit matter?

Of the deals of this matchup, 4 share a suit (98s at 67.29%) and 12 do not (63.86%). 98s does better with a shared suit, by 3.43 points.

98s against 75s by suit overlap, in percent
DealsSpecific dealsShare of deals98s winsTies75s wins98s equity
Share a suit425.0065.8142.95831.22867.293
No shared suit1275.0062.5182.67534.80763.855

How often this matchup comes up

How often does it happen? 16 of the 1,624,350 ordered deals (0.0010%) are 98s against 75s, and 32 (0.0020%) if either hand may sit in either seat.

A worked example

Put $100 each into a $200 pot and deal every board once: 98s averages $129.44 back, ahead of its $100 by $29.44, while 75s averages $70.56, short of its $100 by $29.44.

Scaled to 1,000 deals, that is roughly 633 wins for 98s, 339 for 75s and 28 chopped pots.

The same matchup from the other side

75s versus 98s is this same page seen from the other hand: 35.28% for 75s, 64.72% for 98s.

Open the calculator with 9s8s against 7h5h already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking.

How this was computed

Each figure is a complete count over boards. Take the 16 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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