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Monday, September 21, 2009

CTrent on Defense

CTrent has a nice article on the Reds' fielding. To my disbelief, he actually quotes me from an e-mail exchange we had:

"Through Wednesday's games, I had the Reds at 49 runs above average in the field," Inaz wrote in an e-mail. "That's an average of two different fielding stats (UZR and a team-level one from Hardball Times), plus catchers. Since 93% of all runs are earned runs, that would mean that we'd add ~46 runs to the Reds' ER if they were an average fielding team, shifting their team ERA from 4.31 to 4.62.

"tRA, which is my personal favorite fielding- and context-independent pitching stat, they have the Reds' actual runs allowed as 73 better than predicted in their model (I'm getting that from the xRR number), which would be ~69 more earned runs than expected. That pushes team ERA from 4.31 to 4.81," Inaz said. "Last one: the Reds' FIP, another fielding-independent pitching stat (this one only looks at k-rate, bb-rate, and hr-rate), puts the Reds expected team ERA at 4.66 compared to their ERA of 4.31. That one matches up well to the first estimate."

Pretty fun to see my crap alongside quotes by Baker, Arroyo, and Rolen, even if I'm clearly the least articulate of the bunch. :)

It's probably pretty obvious, but the e-mail exchange between myself and CTrent led directly to my fielding post at Red Reporter, which comes at this stuff from a slightly different angle.