Why Don’t Philadelphia Phillies Pitchers Throw More Sliders?

In recent years, the slider has become the most talked about pitch in baseball. Pitchers are throwing it more and more, and hitters are trying to keep up.

Tom Verducci wrote about this phenomenon for Sports Illustrated again in July.

Hitters are hitting just .209 against the slider, the lowest against any of the five pitches thrown at least 2% of the time. Pitchers and their coaches are tracking the data. For the first time in recorded history, fastballs (not including cutters) are being thrown less than half the time. Since 2015, which marked the beginning of the Statcast era, fastball usage has dropped from 57% to 48%. Almost all of this decline can be attributed to an increase in sliders.

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