Scouting Report: Quantrill, the son of former All-Star reliever Paul, flashes plus stuff but has yet to find consistency post-surgery. At his best Quantrill sits 93-95 with downhill angle on his fastball, with a plus changeup and a slider that has improved to average and become a swing-and-miss pitch. Other times he'll work in the low 90s with decreased changeup feel and poor command, surrendering hits en masse. Quantrill is fiercely competitive and sometimes gets frustrated with himself, affecting his ability to execute. His main issue has been locating inside, with lefties in particular punishing him for a .305/.376/.468 line in 2018.
The Future: Quantrill still flashes mid-rotation potential with three quality pitches. Improving his command, composure and consistency will be key before his major league debut in 2019.
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