Kansas City’s Kelvin Herrera is MLB’s new hardest thrower

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Averaging a cool 99.1 mph with his fastball, Royals reliever Kelvin Herrera has taken over as the league’s hardest thrower since being called up last month.

Here’s the top 10, according to Fangraphs data:

99.1 – Herrera
98.6 – Andrew Cashner (Padres)
98.4 – Henry Rodriguez (Nationals)
96.8 – Nate Jones (White Sox)
96.8 – Alexi Ogando (Rangers)
96.7 – Pedro Strop (Orioles)
96.4 – Aroldis Chapman (Reds)
96.3 – Jason Motte (Cardinals)
96.0 – Esmil Rogers (Rockies)
96.0 – Craig Kimbrel (Braves)

The top starter on the list is Stephen Strasburg at 95.7. Obviously, Strasburg and a few other starters could average in the high-90s for an inning like some of these relievers, but they have to pace themselves to go six or seven innings.

Herrera, a 22-year-old righty out of the Dominincan Republic, generates his big velocity despite standing just 5-foot-10. He has a 3.31 ERA and a 15/3 K/BB ratio in 16 1/3 innings since joining the Royals.

Interesting is that, to this point anyway, Herrera has used his fastball less than any other pitcher on this list, throwing it just 55 percent of the time. Cashner and Rodriguez are both over 70 percent fastballs. Chapman throws his 84 percent of the time.