for the lazy....... Neifi Index. Named for infielder Neifi Pérez, this statistic measures a player's ability to contribute to his team's success by not playing. Introduced as an award that "we, the great whiffing, grounder-booting, sedentary lifestyle-leading masses, wouldn't just have a chance of winning if we were allowed to play. We'd be a lock", the Neifi Index is the difference between a player's team's winning percentage when he does not play and when he does play. It is called the Neifi Index because when Kaufman first computed it, the San Francisco Giants winning percentage when Pérez did not play was .929, but was only .542 when he did play, thus giving him a Neifi Index of .387.