KJo vs 54s: preflop equity

Before any board card is dealt, KJo holds 59.13% equity against 54s, which leaves 54s with 40.87%.

KJo

59.13%

Wins 58.78%, ties 0.71%

54s

40.87%

Wins 40.51%, ties 0.71%

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

KJo against 54s: the numbers

Exact preflop results for KJo against 54s, in percent
HandWinsTiesLosesEquity
KJo58.7750.70540.52059.128
54s40.5200.70558.77540.872

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.

KJo is ahead, but 54s is far from dead: it takes 405 of every 1,000 deals outright. Split pots make up 0.71% of the boards, and both equity figures count them as half a win each.

In the ranking of all 169 starting hands, KJo is number 26 and 54s is number 136.

Boards behind the percentages: 82,190,592 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
KJo48,308,000579,00033,304,000
54s33,304,000579,00048,308,000

Exact total: 48 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.

KJo against 54s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
KJo1.4471.7012.4680.691
54s0.6912.4681.7011.447

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

Split by what the flop looks like, KJo peaks at 67.28% on rainbow flops topped by a ten or better and bottoms out at 32.37% on low rainbow flops (nine high or lower). The lead reverses on low rainbow flops (nine high or lower): there 54s is the favorite even though KJo is ahead overall.

KJo against 54s by flop texture, in percent
FlopShare of flopsKJo winsTies54s winsKJo equity
Rainbow, ten or higher24.71767.1240.31632.56067.282
Rainbow, nine or lower6.31331.8990.93467.16732.366
Two-tone46.66757.2650.41942.31657.475
Monotone5.21256.3802.55941.06157.659
Paired17.09161.4841.40037.11662.184

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

Relative to a random opponent, KJo changes by -1.44 points (baseline 60.57%) and 54s by -0.58 points (baseline 41.45%).

KJo and 54s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
KJo, all flops59.12860.569-1.4410.97621
KJo, rainbow, ten or higher67.28260.569+6.7131.11083
KJo, rainbow, nine or lower32.36660.569-28.2030.53437
KJo, two-tone57.47560.569-3.0940.94892
KJo, monotone57.65960.569-2.9100.95196
KJo, paired62.18460.569+1.6151.02666
54s, all flops40.87241.453-0.5810.98598
54s, rainbow, ten or higher32.71841.453-8.7350.78928
54s, rainbow, nine or lower67.63441.453+26.1811.63158
54s, two-tone42.52541.453+1.0721.02586
54s, monotone42.34141.453+0.8881.02142
54s, paired37.81641.453-3.6370.91226

Does a shared suit matter?

Does suit overlap move the numbers? KJo has 59.82% when the hands share a suit and 58.44% when they do not. KJo does better with a shared suit, by 1.38 points.

KJo against 54s by suit overlap, in percent
DealsSpecific dealsShare of dealsKJo winsTies54s winsKJo equity
Share a suit2450.0059.4430.74539.81259.815
No shared suit2450.0058.1080.66541.22758.440

How often this matchup comes up

How often does it happen? 48 of the 1,624,350 ordered deals (0.0030%) are KJo against 54s, and 96 (0.0059%) if either hand may sit in either seat.

A worked example

Worked example: both players commit $100, so $200 sits in the middle. Over every board, KJo's average share is $118.26 (a gain of $18.26) and 54s' is $81.74 (a loss of $18.26).

Scaled to 1,000 deals, that is roughly 588 wins for KJo, 405 for 54s and 7 chopped pots.

The same matchup from the other side

54s versus KJo is this same page seen from the other hand: 40.87% for 54s, 59.13% for KJo.

KsJh 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

The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 48 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it.

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

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