© 2026 Calculation Point. All rights reserved.
Quantify a basketball player's single-game performance using John Hollinger's advanced Game Score formula.
Get Start0
Web Developer & Data Tools Specialist · 5+ years experience
The Game Score Calculator evaluates a basketball player's single-game performance using John Hollinger's Game Score formula — a system that combines 11 box-score statistics into one number reflecting individual impact and overall contribution. The formula rewards positive contributions (points, rebounds, assists, steals, and blocks) while penalizing negative ones (missed shots, turnovers, and personal fouls), producing a quick, objective, and balanced snapshot of how much a player helped or hurt their team in any given game. It's useful for coaches, analysts, fantasy managers, and fans who want an instant data-driven performance summary.
Game Score was created by ESPN basketball analyst John Hollinger in the early 2000s as a simplified, accessible alternative to his more complex Player Efficiency Rating (PER). Hollinger wanted a metric that could quickly and fairly quantify single-game performance using only standard box-score data that was readily available to anyone following the sport. The formula was calibrated so that an average NBA starter produces a score around 10, making the benchmarks intuitive and easy to interpret without statistical background. Game Score has since been widely adopted in basketball analysis at all levels, from youth leagues to professional scouting and media coverage.
Game Score is a single number that summarizes a basketball player's complete performance across one game. Developed by John Hollinger, it uses 11 box-score statistics — each weighted by its contribution to winning. A score of 10 represents a league-average NBA starter performance; anything above 30 is genuinely exceptional.
The formula assigns positive and negative weights to each statistical category: points, rebounds, assists, steals, and blocks all add to the score, while missed field goals, missed free throws, turnovers, and personal fouls subtract from it. The result is a balanced assessment that rewards efficiency alongside raw production volume.
Michael Jordan's 64.6 in a 1990 playoff game is the highest single-game Game Score ever recorded. Wilt Chamberlain's 100-point game in 1962 produces an estimated 78.1 by modern calculation, though official records are incomplete. A score above 40 is exceptionally rare, making it a reliable marker of truly historic individual performances.
Game Score provides a level, consistent playing field for comparing NBA performances across different decades. By converting box-score statistics into a single standardized metric, you can meaningfully discuss whether a 1986 Magic Johnson game was more individually impactful than a 2023 Nikola Jokic triple-double with statistical backing.
Monitoring a player's Game Score game-by-game throughout a season reveals important patterns in consistency, development, and decline. Rising Game Score trends early in a career often signal a breakout player; declining trends in veterans can indicate fatigue accumulation, injury risk, or the need for an adjusted role within a team's system.
Game Score captures what raw scoring statistics miss entirely. A player who scores 22 points but commits 6 turnovers and misses 17 shots will receive a lower Game Score than someone who scores 15 points efficiently while adding 6 assists and committing zero turnovers — correctly identifying who actually helped their team more.
Michael Jordan holds the all-time NBA single-game Game Score record at 64.6, set in a 1990 playoff game against the Cleveland Cavaliers. Kobe Bryant's 81-point performance in 2006 produced a Game Score of 63.5 — second highest in history. A typical NBA starter averages a Game Score between 10 and 15 per game; anything above 30 represents a genuinely standout performance; and a score of 40 or higher marks a truly historic, highlight-reel game. Game Score provides a consistent standard for comparing performances across different decades and eras — useful for any cross-generational basketball debate.