77 vs 53s: preflop equity

Counting every board, the equity split is 80.39% for 77 and 19.61% for 53s, so 77 leads by 60.78 points.

77

80.39%

Wins 79.71%, ties 1.35%

53s

19.61%

Wins 18.94%, ties 1.35%

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

77 against 53s: the numbers

Exact preflop results for 77 against 53s, in percent
HandWinsTiesLosesEquity
7779.7121.35018.93880.387
53s18.9381.35079.71219.613

Here a pocket pair (77) meets a suited hand (53s). The pair outranks both of the other hand's cards, which is why the pair is a strong favorite.

This is one of the lopsided matchups: 53s wins only 18.94% of the boards outright. Split pots make up 1.35% of the boards, and both equity figures count them as half a win each.

77 ranks number 9 of 169 starting hands, and 53s ranks number 146, by equity against a random hand.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
7732,758,000555,0007,783,000
53s7,783,000555,00032,758,000

24 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 53s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
774.0991.2555.2800.244
53s0.2445.2801.2554.099

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

The flop changes the picture. 77 does best on rainbow flops topped by a ten or better, at 84.34%, and worst on low rainbow flops (nine high or lower), at 72.60%. 77 stays ahead on all five textures.

77 against 53s by flop texture, in percent
FlopShare of flops77 winsTies53s wins77 equity
Rainbow, ten or higher25.84483.9250.83715.23884.344
Rainbow, nine or lower5.06572.2770.64127.08272.598
Two-tone46.54578.4240.75620.82078.802
Monotone5.21273.4752.85423.67174.902
Paired17.33480.9373.46715.59682.671

A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank.

Compared with a random hand

Each hand has a baseline against a random hand: 66.24% for 77, 39.69% for 53s. Here the change is +14.15 and -20.08 points.

77 and 53s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
77, all flops80.38766.236+14.1511.21365
77, rainbow, ten or higher84.34466.236+18.1081.27339
77, rainbow, nine or lower72.59866.236+6.3621.09605
77, two-tone78.80266.236+12.5661.18972
77, monotone74.90266.236+8.6661.13084
77, paired82.67166.236+16.4351.24813
53s, all flops19.61339.693-20.0800.49412
53s, rainbow, ten or higher15.65639.693-24.0370.39443
53s, rainbow, nine or lower27.40239.693-12.2910.69035
53s, two-tone21.19839.693-18.4950.53405
53s, monotone25.09839.693-14.5950.63230
53s, paired17.32939.693-22.3640.43658

Does a shared suit matter?

When the hands share a suit, 77 holds 80.97%; when they do not, it holds 79.81%. 77 does better with a shared suit, by 1.16 points.

77 against 53s by suit overlap, in percent
DealsSpecific dealsShare of deals77 winsTies53s wins77 equity
Share a suit1250.0080.2701.39118.33980.965
No shared suit1250.0079.1541.30919.53779.809

How often this matchup comes up

You will meet this exact matchup 0.0030% of the time in a random heads-up deal: 48 of 1,624,350, counting either seat order.

A worked example

Take a $200 pot built from $100 each. 77's equity of 80.39% is worth $160.78, a $60.78 edge, and 53s' 19.61% is worth $39.22, which is $60.78 under its stake.

Over a long run, 1,000 deals split into about 797 for 77, 189 for 53s and 14 tied.

The same matchup from the other side

Swap the hands and you get 53s with 19.61% against 77 with 80.39%. We keep one page per matchup, with the better-ranked hand first.

The calculator link fills in 7s7h against 5d3d, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength.

How this was computed

All 1,712,304 five-card boards are dealt for every suit pattern among the 24 specific deals of 77 against 53s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.

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

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