10:18 PM EDT, Wed October 22, 2014
DRaysBay Sep 23, 2014

Correction: Grant Balfour's fastball is straight

Yesterday, I commented on an interview with Andrew Friedman, and checked the facts of a few of the assertions he made. One of those assertions was that Grant Balfour still has the characteristics that made him successful. To evaluate that statement, I presented this graph, from Baseball Heat Maps, showing the changes in Balfour's horizontal fastball movement over time. Unfortunately, I made an error reading this graph that was not only incorrect, but also completely opposite to the truth, and very misleading. Much thanks to community member SagehenMacGyver47 who alertly pointed out the...

Grant Balfour Photos

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