Scouting Report

Scouting grades: Fastball: 55 | Cutter: 50 | Changeup: 70 | Control: 50 | Overall: 50

Signed for just $10,000 out of Mexico in January 2025, Marquez quickly blossomed into one of the best pitching prospects in the Phillies system. He reached Single-A at the end of his two pro debut and posted a 41.9 percent strikeout rate between two Class A levels in the first four months of the 2026 season. The Giants acquired him and righty relief prospect Marty Gair at the Trade Deadline in exchange for Luis Arraez and Caleb Kilian.

Marquez owns one of the best changeups in the Minors, a low-80s weapon with so much fade that hitters rarely make contact against it, even when it stays in the strike zone. He sets his cambio up with a solid 94-96 mph fastball that tops out at 98 with plenty of armside run and decent carry. His third offering is an upper-80s cutter that he locates well.

The biggest question with Marquez is the considerable effort in his delivery, so he'll have to prove he can hold up under a starter's workload. His mechanics do come with good extension and a low release height, and they don't prevent him from throwing strikes with all three of his offerings. If he holds up, he could become at least a mid-rotation starter.

Scouting grades: Fastball: 50 | Slider: 45 | Changeup: 55 | Control: 45 | Overall: 40

While the Phillies handed out eight six-figure bonuses during the 2025 international signing period, they also did some bargain shopping. The best find might be Marquez, who was “old” for the class, signing at age 19 for just $10,000 out of Mexico. The Phillies liked his combination of athleticism, stuff and feel for pitching enough to send him stateside for his pro debut, and after missing a good amount of bats over 10 Florida Complex League appearances, he got moved up to full-season Clearwater when the FCL season concluded.

At 6-foot-2 and about 180 pounds, Marquez has an athletic frame with projection left on it to add more strength. He was already adding a few ticks of velocity to his fastball, touching 96 mph during his debut summer after being more 92-94 with the heater when he first signed. He throws it with good sink to get ground-ball outs. He does the same thing with his changeup, a pitch that could be a plus offering in the future. The cambio is ahead of his breaking ball, a slider that has some depth. It’s more of a get-me-over, steal-a-strike pitch right now, but there’s enough feel to spin to think it might be a solid breaker in time.

Marquez doesn’t have much track record yet, but his smooth and repeatable delivery point to an ability to be a solid strike-thrower as he develops and moves up the organizational ladder. If the breaking ball comes and he can command all three offerings, he has the chance to be a starter, with more in the tank to come.

Awards

SAL Pitcher of the Week

Week	Team
07/26/2026
06/21/2026

FSL Pitcher of the Week

Week	Team
05/17/2026
08/24/2025

Transactions

Team	Date	Transaction
	08/25/2026	Eugene Emeralds placed RHP Ramon Marquez on the 7-day injured list.
	08/04/2026	Eugene Emeralds activated RHP Ramon Marquez.
	08/03/2026	San Francisco Giants traded 2B Luis Arraez and RHP Caleb Kilian to Philadelphia Phillies for RHP Marty Gair and RHP Ramon Marquez.
	08/03/2026	RHP Ramon Marquez assigned to Eugene Emeralds.
	06/16/2026	RHP Ramon Marquez assigned to Jersey Shore BlueClaws from Clearwater Threshers.
	06/16/2026	Jersey Shore BlueClaws activated RHP Ramon Marquez.
	05/08/2026	RHP Ramon Marquez assigned to Clearwater Threshers from FCL Phillies.
	03/05/2026	RHP Ramon Marquez assigned to Philadelphia Phillies Prospects.
	08/26/2025	RHP Ramon Marquez assigned to FCL Phillies from Clearwater Threshers.
	07/29/2025	RHP Ramon Marquez assigned to Clearwater Threshers from FCL Phillies.
	05/15/2025	RHP Ramon Marquez assigned to FCL Phillies from DSL Phillies Red.
	02/13/2025	RHP Ramon Marquez assigned to DSL Phillies Red.
	01/15/2025	Philadelphia Phillies signed free agent RHP Ramon Marquez to a minor league contract.