A batting average for Jeopardy. Each rating measures a player's raw ability — knowing the answer and beating the buzzer — stripped of wagering strategy and luck. 0.00 is an average player; the higher the number, the more dominant. Only players with 4+ games are rated. Teen, celebrity, kids week, and power-player tournaments are excluded — they use different rules or contestant populations. How are these calculated?
Named after Sam Buttrey — statistics professor, Jeopardy champion, and easter egg. Bradley-Terry Unified Tournament-Trained Rating Estimation Yield.