The fielder's blow ability besides the pitcher (OPS) was being
seen last time, and of course, it was also possible to compare
at NPB and MLB about the blow ability of the pitcher.
And I noticed that there is a great difference
which is to the extent it was marvellous, there.
First pitcher's OPS of NPB for these 20 years and MLB is indicated.
FIG.12
1.
There is a significant difference in pitcher's OPS of
NPB and MLB statistically(p value < 0.001).
The absolute value of the difference is 0.071
2.
Ill-balance is big more than MLB in pitcher's OPS in NPB.
While a standard deviation of pitcher's OPS in NPB is 0.035, that of MLB is 0.019.
The difference in the pitcher's blow ability in NPB and MLB may be the
one by which the difference in the baseball culture of Japan and U.S.
In consideration of the injury or throw, so as not to actively blow
the pitcher is contemplated that the coach's intervention.
On the other hand, such small guidance may be the one which
isn't done to a pitcher in the United States.
I, on the assumption the pitcher of NPB (Japan) has demonstrated the
striking force of about MLB (America) pitcher, I think to try to
calculate the contribution to the score here.
First a plot makes score/G OPS in CL for these 20 years,
and a relational expression is calculated.
R/G = OPS×12.554 - 4.919
FIG.13
Something of CL and NL where I have no DH systems is used as data.
There is a difference in 0.072 in pitcher's OPS of pitcher's OPS and NL in CL.
It's shown on the next figure about the contents in detail.
For pinch hitter is issued, pitcher has less number
of times that goes to bat compared to fielder.
Considering the fact that, it shows the results of a pitcher
of CL (NPB) was replaced with a pitcher of NL (MLB).
FIG.14
When OPS calculates using a relational expression in next to 0.724,
OPS and score/G from 0.720, it'll be 6.92 points by 144 games
(the number of annual games).
When this difference is converted into the trade a fielder
(put with the main focus on an attack) temporarily, it starts to be a figure.
It's equivalent to a trade between OPS=0.744 and the player of OPS=0.777.
FIG.15
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ピッチャーの打撃能力（OPS）
前回、投手以外の野手の打撃能力（OPS）を見ていて、当然、投手の打撃能力
についても NPB と MLB で比較することができた。そして、そこに驚くほどの
大きな差があることに気がついた。
まず、ここ20年の NPB と MLB の投手の OPS を示す
1.
統計的に有意で大きな差がある。
p value < 0.001
差=0.071
2.NPBの投手のOPSはバラツキが大きい。
NPB、標準偏差=0.035
MLB、標準偏差=0.019
NPB と MLB の投手の OPS の違いは、日米の野球文化の違いなのかもしれない。
日本では、投手に対して、ケガなどを考慮して、積極的な打撃をしない
よう、指導が入るのかもしれない。
一方、アメリカでは、投手に対してそういった細かい指導はしないのかもしれない。
ここで、仮に NPB の投手が MLB の投手と同じくらいの打撃能力を発揮したら
どうなるかを計算してみようと思う。
データとしては、DH 制のない CL と NL のものを使用する。
OPSが0.720から0.724となり、OPS と score/G の関係式を用いて算出すると、
144ゲーム（年間試合数）で6.92点となる。
この値は、打撃面からだけで考えると、OPS=0.744とOPS＝0.777の
選手間のトレードに相当する。