MLB pipeline had him as Boston’s #19 prospect in 2019. Seems like he might be a RH version of Alex Wells. Reyes might throw a bit harder at 88-92. Good milb depth to add. His scouting report from mlbpipeline after the 2019 season is below,
Scouting grades: Fastball: 50 | Slider: 50 | Curveball: 45 | Changeup: 50 | Control: 60 | Overall: 40
Boston spent more than $146 million on its 2014 international class, including a $72.5 million contract for Rusney Castillo and a record $31.5 million bonus (plus a matching amount in penalty tax) for Yoan Moncada. Signed with no fanfare for $90,000 out of the Dominican Republic that July, Reyes has pounded the strike zone and dominated everywhere he has gone since. The low Class A South Atlantic League named him its pitcher of the year in 2018, when he ranked second in the Minors in WHIP (0.91), fourth in ERA (1.97) and K/BB ratio (7.6) and fifth in walk rate (1.1 per nine innings).
Reyes derives his success from uncanny command, a knack for sequencing his pitches and deception. His fastball works from 88-92 mph with ordinary life, but plays better than its velocity because he uses his 6-foot-4 frame and high arm slot to create extension and downhill plane. His changeup is his most reliable secondary offering and his low-80s slider/cutter is more effective than his mid-70s curveball, which has shape but lacks power.
Reyes has supreme pitchability but his body is fairly maxed out, so he probably won't throw much harder. He has little margin for error but rarely made mistakes while averaging 0.9 walks per nine innings during his first four pro seasons. While it's hard to give him a ceiling higher than a No. 5 starter, he's intelligent, determined and gets the most out of his ability.