February 28, 2021

Amed Rosario Arrived a Little Late, but He’s Here Now (FanGraphs)


Take a look at any Mets prospect list from 2017 and Amed Rosario was the headliner. He was all fast-twitch muscles and gorgeous defense. His frame was the type that looks perfectly suited for shortstop: tall and rangy, but not so lanky that he couldn’t one day hit for power. We saw him as a 65 FV prospect, the third-best in all of baseball.

After 2017 and 2018, that assessment looked sorely misguided. Over 762 plate appearances across those two seasons, he put up every scary number imaginable. He walked only 4.2% of the time while striking out 22% of the time, both worse than he’d performed in any full minor league season. Pitchers knocked the bat out of his hands; he hit for a .129 ISO despite 12 triples. The speed that made those triples possible didn’t translate into extra value; his BABIP was only .318, which is good but not great, and he was caught stealing a brutal 14 times.

Those are just offensive outputs, but the offensive and defensive approach were perhaps even scarier. He swung at 42% of pitches outside of the zone, the sixth-highest chase rate in the bigs. Every hitter who chased more often than him, however, channeled their aggression better; he somehow…

Read “Amed Rosario Arrived a Little Late, but He’s Here Now” at FanGraphs