77 vs AKo: preflop equity

In equity, 77 against AKo stands at 54.98% to 45.02%, a gap of 9.96 points.

77

54.98%

Wins 54.80%, ties 0.36%

AKo

45.02%

Wins 44.84%, ties 0.36%

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

77 against AKo: the numbers

Exact preflop results for 77 against AKo, in percent
HandWinsTiesLosesEquity
7754.8030.36144.83654.984
AKo44.8360.36154.80345.016

We compare a pocket pair with an offsuit hand. A pair against two higher cards is the classic race: the pair is usually a small favorite or close to even, and each overcard that pairs is a way to take the lead.

That is a slim edge: neither hand is far ahead. About 0.36% of boards chop the pot, which is why equity sits slightly above the win figure for both hands.

Among the 169 starting hands, 77 is number 9 and AKo is number 12 by strength against a random hand.

Boards behind the percentages: 123,285,888 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
7767,564,000445,00055,276,000
AKo55,276,000445,00067,564,000

72 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.

77 against AKo read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
771.2211.8252.2300.819
AKo0.8192.2301.8251.221

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

If you know the kind of flop that came, the numbers shift: 77 holds 80.23% on low rainbow flops (nine high or lower) and 47.91% on rainbow flops topped by a ten or better. On rainbow flops topped by a ten or better the numbers flip and AKo is the one ahead.

77 against AKo by flop texture, in percent
FlopShare of flops77 winsTiesAKo wins77 equity
Rainbow, ten or higher24.71747.8280.16052.01247.908
Rainbow, nine or lower6.31479.8690.72819.40380.233
Two-tone46.48554.0180.26645.71654.151
Monotone5.15150.7421.68847.57051.586
Paired17.33358.9340.37440.69259.121

Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank.

Compared with a random hand

A random hand would give 77 66.24% and AKo 65.32%. Against each other the change is -11.26 points for 77 and -20.30 for AKo.

77 and AKo here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
77, all flops54.98466.236-11.2520.83012
77, rainbow, ten or higher47.90866.236-18.3280.72329
77, rainbow, nine or lower80.23366.236+13.9971.21132
77, two-tone54.15166.236-12.0850.81755
77, monotone51.58666.236-14.6500.77882
77, paired59.12166.236-7.1150.89258
AKo, all flops45.01665.320-20.3040.68916
AKo, rainbow, ten or higher52.09265.320-13.2280.79749
AKo, rainbow, nine or lower19.76765.320-45.5530.30262
AKo, two-tone45.84965.320-19.4710.70191
AKo, monotone48.41465.320-16.9060.74118
AKo, paired40.87965.320-24.4410.62583

Does a shared suit matter?

Of the deals of this matchup, 60 share a suit (77 at 54.90%) and 12 do not (55.39%). 77 does better with no shared suit, by 0.49 points.

77 against AKo by suit overlap, in percent
DealsSpecific dealsShare of deals77 winsTiesAKo wins77 equity
Share a suit6083.3354.7150.37744.90854.903
No shared suit1216.6755.2470.28244.47155.388

How often this matchup comes up

The class pair covers 72 combinations of specific cards in a fixed seat order, 0.0044% of 1,624,350, and 144 (0.0089%) in either order.

A worked example

Say each player puts $100 in before the flop, making a $200 pot. On average 77 takes back $109.96 of it, which is $9.96 more than it put in, and AKo takes back $90.04, $9.96 less than it put in.

Run 1,000 deals and the tally comes out near 548 for 77, 448 for AKo and 4 ties.

The same matchup from the other side

The reversed view, AKo against 77, shows 45.02% for AKo and 54.98% for 77. It is the same count, so it redirects here.

Open the calculator with 7s7h against AdKc 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

Method: exact enumeration. The 72 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board.

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

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