Ramon Marquez

Organization Prospect Rankings

• 
  Ranked Philadelphia Phillies #14 prospect in 2026
  BA Grade/Risk: 50/High
  
  Adjusted Grade: 35
  
  Track Record: Marquez was born in Phoenix but moved to Mexico and signed for $10,000 in January 2025. He began his career in the Florida Complex League and quickly began to percolate as one of the team’s top arms in the lower levels. He earned a promotion to Low-A Clearwater in August. After a rocky full-season debut, he allowed just three runs over his final 14 innings. He struck out 18 and walked just two in that span. He finished with a flourish, striking out seven over five one-hit innings.
  
  Scouting Report: Right now, Marquez’s money-makers are a 92-96 mph four-seamer and a changeup, which he complements with a slider that needs plenty of refinement. The fastball has ride-run properties and bores in on righthanded hitters, while the changeup shows sudden drop and produced a miss rate of 62.1%. The slider will occasionally flash fringe average, but the pitch needs a lot more work to consistently reach those heights. His delivery is compact and repeatable, which allowed him to pound the zone at both of his stops. He walked just 17 hitters in 55 innings and projects to have plus control. Beyond refinement of his slider, Marquez needs to get strong enough to hold up to a longer workload, and the Phillies might also add a two-seamer to his mix.
  
  The Future: After a fantastic debut, Marquez should return to Low-A to begin 2026. He has a chance to fit toward the back of a rotation once he’s fully formed.
  
  Scouting Grades Fastball: 55 | Curveball: - | Slider: 40 | Changeup: 60 | Control: 60