Aroldis Chapman throws the baseball very hard. At his hardest, maybe no ever has thrown one harder. Now, as mileage and innings take their toll, he doesn’t throw quite as hard, but make no mistake, he’s still a flamethrower.
It’s become a bit of a topic de jour for the YES Network to mention Chapman’s declining velocity. It’s true. He doesn’t throw as hard as a 31-year-old as he did as a youngster, especially in Cincinnati. I don’t mean to pick on the broadcast team — hey, you gotta fill time — but Chapman’s velocity is hardly a cause for major concern. Among qualified relievers, his average fastball velocity is fourth-best.
Ah, heavy is the head that wears the crown.
The thing is, Chapman does seem aware that he’s lost just a bit of velocity, and that’s where this story picks up steam. Because he perhaps doesn’t feel as safe just blitzing every opposing batter with heat, he’s turned to his slider more and more the last two seasons. It was always at least a tantalizing pitch, but as we’ll see in the breakdown, when he is commanding the zone with the slider, he remains as lethal as ever.
Consider Fangraphs’ pVal metric. It tells us that for the last two seasons, Chapman’s most valuable pitch has been the breaking ball, not the well-known heater. The fastball remains quite a handful — and when Chapman is on his sequencing game, probably lifts the slider. The combination of the two, mixed around the zone with confidence and command, have kept Chapman among the game’s elite relievers even as age tries to draw its fee.
Chapman closed out the 2019 All-Star Game with epic flair. Let’s take a look.