Brock Beauchamp

Alex Speier of The Boston Globe wrote that the Red Sox are pursuing extensions of one or all of their "Big Three" prospects: Roman Anthony, Kristian Campbell, and Marcelo Mayer. Frankly, it'd be surprising if the Sox weren't interested in extending any of these players, particularly Anthony, who spent much of last year as the consensus #1 prospect in baseball. Teams have been wildly successful in extending some of the best prospects in baseball as or even before they play a major league game. Last season, the Brewers inked outfielder Jackson Chourio to a long-term deal with multiple team options while he was still a teenager. Chourio unsurprisingly scuffled early in the 2024 season before becoming a dark horse in the Rookie of the Year balloting, completing the season with a 3.9 fWAR in 148 games played.

Signed as an International free agent in January of 2024, Reyes is an 18-year-old pitcher who received the highest bonus of any pitcher in the Red Sox 2024 IFA class. Focusing on three pitches, Reyes throws a fastball between 89-93 mph that has already seen an uptick in velocity since he signed. It is easy to see that increasing more as he matures. The pitch shows arm-side run and sink at times. His slider sits between 84-86 mph and has already flashed bat-missing ability. His changeup is a solid offering, being thrown between 84-87 mph while showing late fade. Reyes started five games last year, throwing 17 innings and not allowing a single run. However, he missed seven weeks during the season to focus on strength training after experiencing fatigue. Reyes is a high-upside arm with high potential due to the fact he checks off all the boxes you look for in a teenage starting pitching prospect. Due to his ability to throw strikes and have a feel for his secondary pitches, Reyes could see his stock jump if he continues his current developmental path.

Another newcomer to the Top 20, Guerrero previously ranked 22nd on Talk Sox’s prospect rankings. Drafted in the 17th round of the 2021 Draft, Guerrero made his major league debut in 2024 and pitched in nine games, only surrendering a single unearned run. Guerrero possessed six pitches while in college, though after signing, the Red Sox asked him to mainly focus on his fastball, splitter, and slider, though he replaced his splitter with a changeup. Guerrero’s fastball sits around 96-98 mph but will top out at 100 mph. His fastball will show life up in the zone, but at the moment, his command and control of it is erratic. If he can refine his command, it can be a plus pitch. His slider sits around 83-86 mph and, while inconsistent, has improved as he’s moved up the minor league levels and shown bat-missing potential. Guerrero’s splitter also sits around 83-86 mph and used to be his primary out pitch, but he shelved it in mid-May of 2024 after struggling to throw it for strikes. His changeup is now his go-to out pitch, and he is thrown between 87-89 mph. This pitch has premium bat-missing ability, and he has shown a better feel for the pitch as he has flashed the ability to throw it in the strike zone or use it to get batters to chase. Guerrero can potentially be a middle-inning reliever and the ceiling of a late-inning reliever used in high-leverage situations. He’s viewed as having some of the best raw stuff of any relief arm in the system, but he needs to improve his command to reach his full potential.