Defense Efficiency is a statistic that attempts to measure team defense. This statistic is similar to BABIP except from the defensive perspective. It is still referenced today due to its simplicity. Defense Efficiency does not have the drawbacks of a statistic such as UZR or Total Zone. The formula for Defense Efficiency is as follows:
On-Base percentage, or OBP, is a statistic used to measure how often a player reaches base safely divided by his number of plate appearances. It is an important statistic for determining how well rounded a batter is at the plate. It is commonly referred to as the second statistic in a “triple slash line” (BA/OBP/SLG). The exact formula for OBP is
H + BB + HBP / AB + BB + HBP + SF
The league average OBP for each position last season:
Weighted On-Base Average, or wOBA, is a statistic that is meant to account for the differences in each type of hit made by the batter. What makes wOBA so effective is that it uses linear weights as the coefficients for each of the outcomes that it measures. For example, the coefficient for a double is 1.24. wOBA is a rate statistic that measures: non-intentional walks, hit-by-pitches, singles, reached on error, doubles, triples, and homeruns. wOBA is placed on the same scale as On-Base Percentage. The formula for wOBA is seen below:
Batting Average on Balls In Play (BABIP) is one of the main statistics used to determine whether any specific player is having a particularly lucky season in terms of batting average or ERA. The league average BABIP usually falls around .300. The formula for calculating BABIP is:
(H – HR) / (AB – K – HR + SF)
Variables in BABIP:
1) Luck: The variable responsible for the most fluctuation in BABIP is random variation, basically luck. An example of this is a softly hit “blooper” that flies over the head of a second baseman but too short for the right fielder to track down.
Expected Fielding Independent Pitching, more commonly known as xFIP, is a formula used to stabilize a pitcher’s home run rates. The rest of the calculation remains exactly the same as FIP. xFIP was created by Dave Studeman from The Hardball Times. The league average home run per fly ball percentage (HR/FB %) usually sits around 10.6 %.
The FIP formula is seen below:
((13 x HR) + (3 x (BB + HBP – IBB)) – (2 x K)) / IP + constant
In the beginning, there was one man with a dream. But, in reality, he only wanted to win his fantasy baseball league. At least that is how the story is told in the book Moneyball: The Art of Winning an Unfair Game. A fantasy baseball league is what led Voros McCracken to investigate the causes for why a pitchers earned run average could fluctuate so wildly from season to season.
What McCracken discovered way back in 1999 would have a profound impact on the way that professional baseball was evaluated. He began to wonder “what if a pitcher could not control what happens to the baseball after it is hit into the field of play?” This question led to a broad field of sabermetrics known as Defense Independent Pitching Theory (Dips Theory).
In Episode 135 of Listen Up! host Jesse Kass hosts the show solo with co-host Scott Heineman out of town. Kass discusses the continuation of the NBA Playoffs, including previews and predictions for the Conference Finals between the Heat & Pacers and Spurs & Grizzlies. Kass also talks about the offseason needs for the Bulls, Knicks, Thunder, and Warri […]