88 vs 66
Preflop odds, heads-up Texas Hold'em
88
8♠8♥
80.7%
66
6♦6♣
19.3%
88 is the favorite: it wins about 80.7% of the time against 66 when both hands go to showdown, with ties 0.9% of runouts.
Computed from 400k simulated deals with the hands shown above.
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