Miami Marlins Draft Prospect: Pitcher Carter Stewart

Miami Marlins Scouting Report

*All grades can be found on MLB.com*

https://twitter.com/PitchingNinja/status/896907238090125312

Fastball: 65

This spring, Stewart’s fastball took a step forward. He went from topping out in the lower 90’s to living 92-94 and topping out at 98 MPH. Already a plus pitch, many believe that he will be able to develop it into a 70-grade or plus-plus pitch down the road.

Curveball: 65

The curveball is truly scary for opposing hitters. At the Tournament of Stars this past summer, it was on full display.

Stewart threw 13 curveballs that TrackMan registered at an average of 3,286 RPM. To put that into perspective, Stewart threw one curveball that had the fifth highest spin rate on a curve ever registered.

If you compared that pitch to major league pitchers, it would have a higher spin rate than current leader Garrett Richards. In 2018, Richards has thrown 91 curveballs with an average spin rate of 3,164.

Stewart throws the curveball in the mid-80s and uses it as a true swing and miss pitch. Most believe that this will be the second 70-grade pitch in Stewart’s repertoire.

Changeup: 50

The changeup is Stewart’s least developed pitch and at times he slows his arm down in order to control it which telegraphs the pitch. Most scouts do believe that he will be able to have the change as an effective third pitch.

Control: 50

While Stewart is not a control artist by any means, for a high schooler who throws 98, he has solid control. As any other pitcher, taking a step forward in pitch location is a key for him having success in pro ball.