This post has been modified from it’s original content, no thanks to some pesky calculation errors.

Follow the money trail! The stat de jour is SIERA, created by Matt Schwartz and Eric Seidman of Baseball Prospectus. SIERA stands for Skill-Interactive Earned Run Average, and let’s face it, See-air-ah is a lot more graceful off of the tongue than Ecks-fip. The BP writers say that SIERA accomplishes the following -

  1. Allows for the fact that a high ground-ball rate is more useful to pitchers who walk more batters, due to the potential that double plays wipe away runners.
  2. Allows for the fact that a low fly ball rate (and therefore, a low HR rate) is less useful to pitchers who strike out a lot of batters (e.g. Johan Santana’s FIP tends to be higher than his ERA because the former treats all HR the same, even though Santana’s skill set portends this bombs allowed will usually be solo shots).
  3. Allows for the fact that adding strikeouts is more useful when you don’t strike out many guys to begin with, since more runners get stranded.
  4. Allows for the fact that adding ground balls is more useful when you already allow a lot of ground balls because there are frequently runners on first.
  5. Corrects for the fact that QERA used GB/BIP instead of GB/PA (e.g. Joel Pineiro is all contact, so increasing his ground-ball rate means more ground balls than if Oliver Perez had done it, given he’s not a high contact guy).
  6. Corrects for the fact that FIP and xFIP use IP as a denominator which means that luck on balls in play changes one’s FIP.

SIERA comes out smelling like a rose when tested against other ERA estimators. In case you’re wondering, the formula for SIERA is -

SIERA = 6.145 – 16.986*(SO/PA) + 11.434*(BB/PA) – 1.858((GB-FB-PU)/PA) + 7.653*((SO/PA)^2) +/- 6.664*(((GB-FB-PU)/PA)^2) + 10.130*(SO/PA)*((GB-FB-PU)/PA) – 5.195*(BB/PA)*((GB-FB-PU)/PA)
where +/- is as before such that it is a negative sign when (GB-FB-PU)/PA is positive and vice versa.

Here’s your 2009 Cardinals, by SIERA, sorted by IP.


Name IP SIERA ERA FIP ERA-SIERA FIP-SIERA
Adam Wainwright 233 3.38 2.63 3.20 0.75 -0.18
Joel Pineiro 214 3.57 3.49 3.36 0.08 -0.20
Chris Carpenter 192.7 3.36 2.24 2.86 1.12 -0.50
Todd Wellemeyer 122.3 5.07 5.89 5.37 -0.82 0.29
Kyle Lohse 117.7 4.47 4.74 4.60 -0.27 0.14
Brad Thompson 80 4.74 4.84 4.70 -0.10 -0.04
Kyle McClellan 66.7 4.44 3.38 3.98 1.06 -0.46
Ryan Franklin 61 4.32 1.92 3.27 2.40 -1.06
Mitchell Boggs 58 4.49 4.19 4.20 0.30 -0.29
Jason Motte 56.7 3.83 4.76 4.86 -0.93 1.03
Trever Miller 43.7 2.88 2.06 3.41 0.82 0.52
Dennys Reyes 41 4.20 3.29 3.91 0.91 -0.30
Blake Hawksworth 40 4.69 2.03 3.83 2.66 -0.86
John Smoltz 38 2.98 4.26 2.75 -1.28 -0.23

A couple of quick thoughts -

  • John Smoltz is 43 years old. I get it. But he deserves a job, because he’s still really good at what he does. Discrimination against the elderly is an ugly thing, MLB general managers.
  • Our bullpen could really suck next year. Our best reliever is a LOOGY. Ryan Franklin, Kyle McClellan and Blake Hawksworth all had spiffy ERAs, but their SIERA indicates their skills are nigh replacement level. That doesn’t quite “feel” right, so take it for what it’s worth. I still get a sense of evil foreboding about our ‘pen for ’10.  Jason Motte on the other hand comes out looking like the Jason Motte we hyperventilated about not that long ago.
  • Revisiting the turd-storm that was the NL Cy Young this past season, Tim Lincecum’s SIERA was 2.73. Javier Vazquez was 2.87. Dan Haren’s was 3.37.  Just stirrin’ the pot.

I tweaked the original a bit and came up with exactly 87 wins this time.

  • This time I used CHONE projections. For some of the more optimistic projections, I scaled down some, as in the case of Molina, Greene.
  • For the pitchers, I used FIP instead of their projected ERAs. I then shaved off a .1 or .2 up or down, depending on the pitcher.

It’s not quite a perfect world scenario, but it does assume everyone but Carpenter remains healthy, so feel free to shave off 2-3 wins in your mind.

You’ll notice there are four tabs.  The 2nd tab I added Orlando Hudson and Randy Wolf.  John Perrotto today said that Hudson has received zero offers to this point and the poor team Nats are biding their time, hoping to scoop him up on the cheap for a 1 year, incentive-laced deal.  I would think the O-Dawg would prefer St. Louis, if the Cardinals are interested.  The downside: He’s a type A, which will make liveblogging the draft over at FR a real bore, at the minimum.  His projection of 2.4 WAR also concludes he’ll bounce back some defensively.

Derrick Goold also earlier in the week tweeted that the Cards are interested in Oliver Perez and Randy Wolf.  Ollie is still probably priced out of the Cards’ budget, while Wolf is more of an injury risk and should come for less $/yrs.  Goold also said the market may push Jon Garland their way.  Bah.  They may as well have offered Looper arbitration.  All three pitchers project to be around equal value, and again, if all goes well, then O-Dawg +  either Perez/Wolf/Looper/Garland could push the Cards up to 90 wins.

The third scenario is the Summer of Colby.  Pushing Luddy to LF, Slick Rick to RF and assuming Colby will provide some darn good defense in CF  bumps the Cards to 88 wins without adding anyone.  (87.7 to be exact)  Combine this w/ the “sign free agents” scenario and it might do the trick. 

The final tab is the ever hopeful, no moves, 90 win tab.  That’s the dreamland scenario of Carpenter winning the comeback player of the year award and Colby having a ROY campaign of a season.   Hope springs eternal.

I realize I’m late to the party. Heck, I’m crashing the party. I’m sure C70 won’t  mind. Here are my top 5 stories for 2008:

Continue reading »

© 2011 Gas House Graphs Suffusion theme by Sayontan Sinha