MLB's Prospect Pipeline ranks Justin their No. 3 Mets comer, behind Andres Giminez and David Peterson. Scouting grades: Fastball: 60 | Slider: 55 | Curveball: 50 | Changeup: 45 | Control: 45 | Overall: 50 Dunn spent most of his time at Boston College as a reliever, albeit one with multiple pitches. A move to the rotation during his junior season greatly improved his Draft stock, landing him in the first round where the Mets nabbed him with the No. 19 pick in the 2016 Draft. After a solid summer debut, the Mets sent Dunn straight to the Class A Advanced Florida State League for his first full season and he struggled a bit there, finishing the final month of the season on the disabled list. Pure stuff-wise, Dunn was just fine with St. Lucie. His fastball was consistently in the 93-95 mph range and he was able to reach back for more on occasion. His slider can serve as a true out pitch, flashing plus with good late bite. As a reliever, he hadn't worked on his changeup much, and it's behind the other two pitches, but he does show feel for it. He'll need it to get lefties out, something he struggled with last year. Dunn is athletic and repeats his delivery fairly well, but he had command and control issues throughout 2017. A certain learning curve was to be expected, given Dunn's lack of starting experience, though being shut down at the end of his first season didn't help quiet detractors who worried about his size and durability. He still has the stuff to start and has the chance to wipe the slate clean. If starting doesn't work out, he certainly should impact the back end of a big league bullpen.