Page 270 - Contributed Paper Session (CPS) - Volume 7

CPS2094 Yoshimitsu Morinishi et al.
Flyball in batting strategy has the effect of reducing out. Right batter is
easier to receive flyball benefits in batting strategy compared to left batter.
Especially the group that the slow swing speed and the group with the fast
swing speed benefit from the flyball. A group with a standard swing speed is
likely to benefit from the flyball even though the right batter still has the
benefit of flyball but the left batter has less benefit of flyball and there is a
possibility that some players will not benefit from the flyball in the
fundamental batting strategy There was a need to verify in more detail.
As a conclusion of this study,
1. For the entire NPB, like the MBL, the fly leather revolution should be
promoted.
2. The right batteries especially benefit from the fly-ball revolution.
3. It may be necessary to consider whether to adopt the Fribore
Revolution in consideration of the swing speed of each player. With
this conclusion, we have been able to fulfill "verification of the fly
leather revolution at NPB" which is an empirical study in this research.
However, future emerging issues can be considered for this empirical
study.

5. Task
1. Construction of a more persuasive model: In addition to the
explanatory variables currently being used, batting results and pitcher
performance, it is considered that factors that can explain the batting
situation are left behind. In order to evaluate the flyball in an accurate
batting strategy, it is considered necessary to improve the model in
consideration of defense capability and stadium.
2. Small range of swing speed group, individual: In this study, we
constructed a causal model by dividing into 10 groups of left and right
batting and swing speed into a total of 20 groups, but in a smaller
range, ultimately, It is thought that it is necessary to construct a causal
model to judge whether flyball is positive or negative.
3. Evaluation of flyballs by circumstances: In this study, we do not define
the situation and verify the causal effect of the flyball for each swing
speed, but we think that the strategy required by the runner situation
and outcounting is different in the actual game Therefore, it is required
to verify the causal effect of the flyball in the bait track for each
situation.
4. Construction of causal model using hitting angle and swing speed: In
this research. For the convenience of data, we analyzed the striking
number and the number of homeruns as the principal component
analysis and analyzed the principal component score as the swing
speed, but in the theory of "barrel zone" which is originally the basis of

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