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Extrapolated Runs (XR) is a baseball statistic invented by sabermetrician Jim Furtado to estimate the number of runs a hitter contributes to his team. XR measures essentially the same thing as Bill James' Runs Created, but it is a linear weights formula that assigns a run value to each event, rather than a multiplicative formula like James' creation.
Extra bases: Measures the time of bat-on-ball contact to the point the runner advances an "extra" base (first to third or home, or second to home) on all hits (excluding over-the-fence home runs). Home run trot: Measures the time elapsed from time of bat-on-ball contact to the point where the batter-as-runner reaches home plate on home runs ...
Speed Score, often simply abbreviated to Spd, is a statistic used in Sabermetric studies to evaluate a baseball player's speed. It was invented by Bill James, and first appeared in the 1987 edition of the Bill James Baseball Abstract. [1] Speed score is on a scale of 0 to 10, with zero being the slowest and ten being the fastest.
In the most basic runs created formula: = (+) + where H is hits, BB is base on balls, TB is total bases and AB is at-bats.. This can also be expressed as = = where OBP is on-base percentage, SLG is slugging average, AB is at-bats and TB is total bases, however OBP includes the hit-by-pitch while the previous RC formula does not.
Win Shares is a 2002 book about baseball written by Bill James and Jim Henzler. The book explains how to apply the concept of sabermetrics to assess the impact of player performance in a combination of several areas, including offensive, defensive, and pitching on their team's overall performance.
In Major League Baseball (MLB), .300 is considered an average BABIP. [2] Various factors can impact BABIP, such as a player's home ballpark; [3] for batters, being speedy enough to reach base on infield hits; [3] or, for pitchers, the quality of their team's defense. [4]
Runs produced is a baseball statistic that can help estimate the number of runs a hitter contributes to his team. The formula adds together the player's runs and run batted in, and then subtracts the player's home runs.
In baseball, defense—that is, preventing the opponent from scoring runs—is the joint responsibility of the pitcher and the fielders. ERA attempts to adjust for some of the influence of the fielders on a pitcher's runs allowed by removing runs that are scored because of fielding errors —that is, unearned runs.