A Conversation With Yankees Rookie Right-hander Ron Marinaccio

Much of the New York-market media attention that’s followed the announcement that Ron Marinaccio will be on the Yankees’ Opening Day roster has centered on his roots. A boyhood fan of the team that he now plays for, the right-hander was born and raised in Toms River, New Jersey.
There’s much more to his story. A 2017 19th-round pick out of the University of Delaware, Marinaccio has gone from a marginal prospect to the doorstep of a major-league debut in a little more than a year. As Eric Longenhagen put it when he wrote up the 26-year-old reliever for our 2022 Yankees Top Prospects list, “Marinaccio was a 2021 revelation.” In 40 outings comprising 66.1 innings between Double-A Somerset and Triple-A Scranton/Wilkes-Barre, Marinaccio logged a 2.04 ERA and allowed just 35 hits. Moreover, he fanned 105 batters.
A pitch that he hadn’t previously featured has played a big role in his ascent. Described by Longenhagen as a “trapdoor-action changeup,” the offering grades out at 60 on the 20/80 scouting scale — and it’s not his only effective weapon. Marinaccio has increased the velocity of his fastball, and he’s also revamped his slider, in the process adding a horizontal-in-the-opposite-direction component to his arsenal.
Marinaccio — No. 20 on on the aforementioned Yankees list — discussed the analytics-driven evolution of his repertoire prior to a recent spring training game.
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David Laurila: What is the story behind your changeup?
Ron Marinaccio: “I’ve always had it, and the analytics kind of helped bring it out. With the boost of my velo last year, they moved me up a level, and from there we started diving a little bit deeper into the analytics. I realized that I’d only been throwing the changeup around 5% of the time, whereas last year it was probably closer to 40%, maybe even 50%. The usage went way up.”
Laurila: You said the analytics helped bring it out. Had you not known that it was good?
Marinaccio: “Yes, but in the past things were generally more fastball/slider. That was the way people thought righties should pitch to righties. I would throw it mostly to lefties, but once I started throwing it more to righties, I started to get more confidence in it. That’s when I was like, ‘Wow, I was only throwing this 5% of the time?’ My first outing, I threw over 50% changeups.”
Laurila: When and where did you first learn your changeup? Read the rest of this entry »