Quick Look at Farnsworth's Improvement - Updated with 2007 and 2008 Numbers

The professor started out the season with giving up a homerun to Thome and it didn't get any better from that point.  After 5 games his ERA stood at a woppin' 18.90 (Wang territory).  Since then he has not allowed a run and has lowered his ERA to 4.40.  I looked around his pitch charts and nothing stood out until looked at a stat at Brooks Baseball called nibbleness

Nibbleness is the arithmetic mean of the distance of each pitch, in inches, from the edge of a normalized strikezone. Lower indicates "more Nibbley".

Here are Farn's fastball nibble scores for the first 5 games and his last 5 games. 


Date Number of Fastballs Nibbleness
04/07/09 17 6.80
04/10/09 4 8.73
04/13/09 7 6.02
04/15/09 5 6.32
04/19/09 1 1.88
Total 34 6.65

05/08/09 11 4.48
05/12/09 6 7.02
05/14/09 4 3.20
05/15/09 10 4.83
05/19/09 4 1.95
Total 35 4.58


It seems the Professor has become the student and learned to keep his straight flying fastball out of the heart of the plate by ~2.  Let's just hope he doesn't revert back to his old ways.


Update:  I had Harry over at Beyond the Boxscore run the nibble rates for the past 2 years is a chart of the information.  The numbers are different from the ones above because Harry could figure out the eact equation to get a  "normalized strikezone"

Year Nibbleness Rating
2007 5.00
2008 5.09
2009 First 5 Games 5.96
2009 Rest of Season 5.21

Looks like his first few starts of 2009 were out of his recent norm.

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