Although the pitch speed can also remain above 150 km/h, Miller's fastball has the biggest problem of insufficient spin rate, hovering around 2200 rpm.
On the surface, this data has reached the average spin rate level of Major League Baseball, which in theory is not bad; but in the MLB where various baseball monsters run rampant, "average" itself represents mediocrity: According to the official statistics of the Major League, a fastball with a spin rate of 2200 rpm is almost the quality that every power hitter favors and is the spin rate at which hitters achieve the highest quality hits, most easily forming hits.
This is why Lin Guanglai is determined to force Andrew Miller to use fastballs in their duel: After all, with the bases loaded right now, as a power hitter, if he keeps consuming the opponent this way, it's likely that the Indians will be the first to give in.
