Odds Based on Hand Matchups
Favorite-to-underdog matchup Probability Odds For Pair vs. 2 undercards 0.83 4.9 : 1 Pair vs. lower pair 0.82 4.5 : 1 Pair vs. 1 overcard, 1 undercard 0.71 2.5 : 1 2 overcards vs. 2 undercards 0.63 1.7 : 1 Pair vs. 2 overcards 0.55 1.2 : 1
Head-to-Head Starting Hand Matchups
When comparing two starting hands, the head-to-head probability describes the likelihood of one hand beating the other after all of the cards have come out. Head-to-head probabilities vary slightly for each particular distinct starting hand matchup, but the approximate average probabilities, as given by Dan Harrington in Harrington on Hold'em [p. 125], are summarized in the following table.