Baseball America had him as the 474th-best draft prospect and projected him as a late-round pick, so the Red Sox liked him more than at least some scouts. According to
BA.com’s scouting report:
“In three seasons at Canisius, Duffy has consistently filled the strike zone. He posted a 4.13 ERA this season in 80.2 innings with 28 walks, and his 119 strikeouts were the most in the Metro Atlantic Athletic Conference. Duffy does it with a below-average fastball, topping out at 94 mph and cruising at 88-92 mph. It’s not overpowering and there’s some funk to his arm action as he hooks his wrist, but he gets good extension and pounds the zone with his fastball, throwing it for a strike at a 70% clip. Duffy is able to keep hitters off balance with an average changeup, which has good separation off his fastball at 78- 81 mph. He sells it well with his arm speed and it runs away from lefties. Duffy commands his slider well, too, which has helped it be effective against MAAC hitters, but it’s a fringe-average pitch that lacks tight spin (1,900-2.000 rpm) or much power in the mid-to-upper 70s. A team that believes strongly in Duffy’s pitchability or thinks it can help him add velocity could take him in the later rounds”
