Evolution of an out pitch: Matt Harvey's slider
When you watch Matt Harvey pitch, it's easy to see why he generates so many swings and misses. His fastball has averaged 94.8 mph this year and has run as high as 98.9 mph according to PitchFX. He also throws three offspeed pitches at least 10 percent of the time, including a wipeout, upper-80s slider that he'll use roughly once out of every five pitches.
Full article at CBS Sports
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