catcher defense

The 2019 card set introduces a new defensive rating for catchers along with a new CFR range on the pitcher card. The purpose of these changes is to better model the defensive contributions by catchers.

Before we dig into the new system, let’s first examine the deficiency that it is intended to address. Previously, […]

combined lf/rf rating

This year all outfielders will receive an optional “lf/rf” rating. This is a combined rating based on all OF defensive range data. It is recommended that you use the combined rating as it is a more accurate representation of the player’s overall defensive performance. The individual position ratings are based on smaller data samples and […]

2011 range ratings

I’ve posted the 2011 range ratings on the wiki. Please note that this includes ratings for players who will not actually be carded.

mapping defensive range

This is an overview of how defensive range ratings are derived from BIS ZR and OOZ data. This system was initially developed for the 2008 card set. All cited examples are from the 2011 card set (2010 MLB data).

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range ratings available

I’ve posted the 2010 range ratings on the IBL wiki. Please note that this includes ratings for players who will not actually receive a card. I’ve also posted the 2010 carded player list on the wiki for cross-referencing.