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MLB 10 (03/12)

March 12, 2010

Between The Numbers

SIERA in Stat Reports

by Matt Swartz

Just a quick update: SIERA is now available in the Stat Reports.  You can find it by selecting "Pitcher Season" under Custom Reports. 

A sneak peak at the 2009 leaders in SIERA among pitchers with over 150 IP:

  1. Javier Vazquez 2.68
  2. Tim Lincecum 2.73
  3. Justin Verlander 2.79
  4. Zack Greinke 2.83
  5. Dan Haren 2.92
  6. Jon Lester 2.99
  7. Ricky Nolasco 3.04
  8. Roy Halladay 3.09
  9. Josh Johnson 3.34
  10. Josh Beckett 3.34

The rest of the report is here: http://baseballprospectus.com/statistics/sortable/index.php?cid=122325

The Top 5 differences in ERA-SIERA in 2009 (i.e. pitchers due to improve, min: 150 IP)

  1. Ricky Nolasco: 3.04 SIERA, 5.06 ERA
  2. Carl Pavano: 3.92 SIERA, 5.10 ERA
  3. Chris Volstad: 4.39 SIERA, 5.21 ERA
  4. Cole Hamels: 3.55 SIERA, 4.32 ERA
  5. Jorge De La Rosa: 3.63 SIERA, 4.38 ERA

The Top 5 differences in SIERA-ERA in 2009 (i.e. pitchers due to regress, min: 150 IP)

  1. Jair Jurrjens: 4.38 SIERA, 2.60 ERA
  2. J.A. Happ: 4.37 SIERA, 2.93 ERA
  3. Randy Wells: 4.33 SIERA, 3.05 ERA
  4. Matt Cain: 4.09 SIERA, 2.89 ERA
  5. Chris Carpenter: 3.36 SIERA, 2.24 ERA

Enjoy!

Matt Swartz is an author of Baseball Prospectus. 
Click here to see Matt's other articles. You can contact Matt by clicking here

3 comments have been left for this article. (Click to hide comments)

BP Comment Quick Links

Mike Juntunen

Matt, could you get this added under Pitcher Team Year as well? That 'team' isn't a statistical option on Pitcher Season is quite frustrating; there's no real way to just look at the SIERA of one particular staff or another without wading through by IP counts and such.

Mar 13, 2010 09:40 AM
rating: 2
 
mymrbig

Wait, neither Carpenter or Wainwright in the top-10? Beware of Cardinals fans carrying pitchforks, tar, feathers, and a battered-and-bleeding Keith Law effigy!

Mar 15, 2010 10:30 AM
rating: 1
 
BP staff member Matt Swartz
BP staff

Hahaha-- 11th and 12th for Carpenter and Wainwright, respectively, actually. I considered making it a Top 12 to show where they were, but I was afraid that I was letting the pitchforkists win if I did that! :)

Mar 15, 2010 10:56 AM
 
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MLB 10 (03/12)

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