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Originally Posted by mlyons
Perhaps a 25% increase in his strikeout/walk ratio, coupled with playing in one of the most pitcher-friendly parks in the league?
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This is cherry picking.
Sure, there is a 25% difference in y-t-y so:bb (if you use BPro's DT stats, it is a 17% increase). But, over 200 innings, that difference accounts for 5 runs or about a 0.23 difference in ERA. That is very very little of his actual difference of 2 RA/9 ip. [Over 200 ip, those translated stats show a difference of 11 SO and 7 BBs. 11 SO = ~3 runs. 6 BB = ~2 runs. Combine them, you get 5 runs +/- life. This is nice. 5 runs is about 1/2 aggregate win, or about one less blow out.]
His increased so/bb ratio has marginal difference on his season. It doesn't do much to show how or why he gave up fewer runs.
BTW: the Yanks also had one of the worst regular defensive CFers last year in Bernie. UZR had him at -35 in about 1000 innings. UZR also thought Matsui was a negative fielder (though it didn't hate Sori).