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Kelvin Herrera’s Electric Slider

Heat. Smoke. Gas. Pick your favorite baseball adjective for an amped-up fastball and it applies to Kelvin Herrera’s heater. Over the last three seasons, Herrera’s fastball has averaged a tick over 98 mph. That’s convection oven hot. Of the 532 pitches he threw that PitchF/X classified as a four-seam fastball, 143 – or over a […]