Why cricket averages fail to capture a player's true current standing

Why cricket averages fail to capture a player's true current standing
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In short: Traditional career averages tell a story of a lifetime, but they ignore the present. To solve this, the ICC introduced a sophisticated statistical algorithm designed to weight recent form and account for the quality of opposition and specific match conditions, offering a much more dynamic view of a player's skill.

The International Cricket Council (ICC) player rankings were born from a 1987 suggestion by Ted Dexter. The goal was to move beyond simple career averages, which fail to account for the strength of an opponent or the specific conditions of a match. Instead, the ICC uses a weighted average system where recent performances carry the most influence, meaning a player's rating naturally declines over time if they do not maintain their form.

The system operates on a scale of 1000. Every individual match performance is assigned a rating out of 1000 based on pre-determined criteria, and these figures are then averaged to determine the player's overall standing. Because of this mathematical ceiling, reaching a rating of 900 is considered an exceptional achievement. For all-rounders, the rating is calculated by multiplying the player's batting and bowling ratings together and then dividing that product by 1000.

The mechanics differ depending on the discipline. Batting metrics are determined by weighing runs made against the quality of opposing bowlers, the final outcome, and a player's contribution relative to the match totals. Bowlers earn points based on wickets taken, runs conceded, and the match result, with extra rewards for dismissing highly-rated batsmen. To prevent new players from instantly dominating the rankings, a damping-factor is applied during the early stages of a career, ensuring they do not receive a full rating until they have played approximately 20 Test matches.

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