Reaction over Range Using time over distance in measuring baseball defense By Rick Swanson Reaction Time Reaction time starts when the bat and ball make contact. It ends when the ball goes into or past the fielders glove Matt Thomas 2008 PITCHf/x First picture to measure distance Chris Duncan ranged 82 ft The Inside Game: The Science of Baseball May 1910 Range of Fielders on line drives Outfielders range The object of this diagram is to show the relative speed of players in various directions. Note that an outfielder can run one hundred and thirty feet to his right but only one hundred and twenty to his left in the same time, as he starts quicker in the former direction. He can run one hundred and thirty feet directly in front of him but only sixty-five feet behind him. Infielders Range Diagram of the relative distances an infielder covers in fielding balls of equal speed - calculated on the basis of twenty feet to the right. Range in 3 seconds Territory covered by outfielders - calculations on the basis of fly balls remaining in the air three seconds, each fielder covering fifty yards in six second, allowance made for starting. Range in 1.5 seconds Black portions in the above baseball field indicate territory where line hits ought to go safe. Calculations are made on the basis of the velocity of the ball being one and a half second per hundred feet. Time over Distance Reaction time divided by range distance will give baseball a new number for defense. R/R numbers between and will be made by some, and missed by others R/R numbers over.150 that are not made will be recorded