Player metrics, such as ELO ratings, significantly influence betting markets by providing a quantifiable assessment of a player's skill level relative to their opponents. These ratings, which are updated based on player performance in matches, help bettors gauge the probability of an outcome by indicating who is favored to win. As odds are often formulated based on these assessments, a higher ELO rating typically correlates with lower odds for that player or team, reflecting their perceived strength. Consequently, bettors utilize these metrics to make informed wagering decisions, identifying potential value bets when discrepancies arise between the ELO ratings and the offered betting odds.