Luis Guerrero

Organization Prospect Rankings

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  Ranked Boston Red Sox #25 prospect in 2025
  BA Grade/Risk: 40/Medium.
  
  Track Record: Guerrero walks with a limp due to complications from a surgery as an infant that affected the development of the muscles in his right leg. But he worked tirelessly on his mobility, flexibility and strength to earn an opportunity at Florida junior college power Chipola. That work ethic served him well during the Covid shutdown, when he increased his velocity to the upper 90s to emerge as a 17th-round pick in 2021. He largely overpowered hitters but struggled with control in the minors, then broke through at Triple-A Worcester in 2024 to earn a big league callup.
  
  Scouting Report: Guerrero has the weapons to attack hitters in the strike zone and commanded his arsenal better down the stretch in 2024. He has a 96-99 mph four-seam fastball with 10 inches of armside run that produced a 35% whiff rate in Triple-A, which is in the 97th percentile at the level. He complements that with a mid-80s slider to righthanded hitters and high-80s splitter to lefties. His limited ability to bend his right leg limits his extension—to an average of 5.7 feet—but his stuff is barrel-averse in the zone. As such, his biggest breakthrough came when he dropped his walk rate from 14% the first four months to 8% in August and September.
  
  The Future: Guerrero is ready to contribute in a big league bullpen, likely in the middle innings, even if he has the makeup for a high-leverage role.
  
  Scouting Grades: Fastball: 55 | Slider: 45 | Split: 45 | Control: 45.