Yu Darvish’s fastball spin rate generally predicts the frequency with which a batter will whiff on it. With that in mind, I thought it might be interesting to identify the zones in which his spin is highest, thus determining the optimal location for his fastballs.
While I didn’t find a significant difference between most adjacent zones, the data suggests that Darvish’s spin rate is higher when thrown in a particular location. We can see from the charts below that Darvish’s fastball spin rate tends to max out when thrown outside to righties/inside to lefties.