dak
Well-known member
Fascinating article on Fangrpahs today on defensive metrics, with an emphasis on how to interpret Inside Edge results . . . a fairly new system with more of a human element. Among other things, the article suggests that Nick Markakis' lackluster defensive numbers using the DRS and UZR metrics might be explained in large part by poor defensive positioning.
Quick description of Inside Edge system . . .
"Inside Edge provides FanGraphs with the number of plays a defender should make given a range of possible chances. Inside Edge watches each play multiple times and grades the difficulty of the play. Here is their explanation for how they collect the data. Inside Edge’s baseball experts include many former professional and college players. Every play is carefully reviewed, often more than once. It is not uncommon for IE scouts to review certain plays together in order to reach a consensus on the defensive play rating. IE also performs a thorough post game scrubbing process before the data is made official."
Markakis rates consistently above average in the metric the author has derived from Inside Edge data . . .
"Season: PMR, chances
2012: 101, 21
2013: 117, 34
2014: 126, 62
Overall: 119, 117
Comparison: The PMR values are almost in line with his Fan’s Scouting Report. Could it be that Markakis is out of position to make common plays for a right fielder? The team could of had him shading over to center field to help Adam Jones. Maybe the Braves think they can better position Markakis to produce like an above average defending outfielder."
http://www.fangraphs.com/blogs/which-defenders-make-the-plays-they-are-supposed-to/
Quick description of Inside Edge system . . .
"Inside Edge provides FanGraphs with the number of plays a defender should make given a range of possible chances. Inside Edge watches each play multiple times and grades the difficulty of the play. Here is their explanation for how they collect the data. Inside Edge’s baseball experts include many former professional and college players. Every play is carefully reviewed, often more than once. It is not uncommon for IE scouts to review certain plays together in order to reach a consensus on the defensive play rating. IE also performs a thorough post game scrubbing process before the data is made official."
Markakis rates consistently above average in the metric the author has derived from Inside Edge data . . .
"Season: PMR, chances
2012: 101, 21
2013: 117, 34
2014: 126, 62
Overall: 119, 117
Comparison: The PMR values are almost in line with his Fan’s Scouting Report. Could it be that Markakis is out of position to make common plays for a right fielder? The team could of had him shading over to center field to help Adam Jones. Maybe the Braves think they can better position Markakis to produce like an above average defending outfielder."
http://www.fangraphs.com/blogs/which-defenders-make-the-plays-they-are-supposed-to/