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PreGradeCards Expert
Sarah Martinez
Pre-Grading Specialist
Card preparation & submission
Pokémon TCG grading
Chrome card grading
About Sarah Martinez
Sarah Martinez is a Pre-Grading Specialist at PreGradeCards with deep expertise in card preparation, submission workflows, condition evaluation, and TCG grading. A former PSA group submitter with 8+ years in the hobby, Sarah has helped collectors save thousands by identifying cards that will not achieve profitable grades before submission. She specializes in Pokémon TCG, chrome card grading, autograph authentication, and packing and shipping protocols. Sarah is the go-to expert for beginners entering the grading hobby.
Areas of Expertise
Card preparation & submission
Pokémon TCG grading
Chrome card grading
Surface flaw detection
Autograph authentication
Pre-grading checklists
Articles by Sarah Martinez
How to Submit Cards to PSA: Complete Step-by-Step Guide
How to Pack Cards for Grading: Shipping Guide
How to Prepare Cards for Grading: Pre-Submission Checklist
Surface Flaws: How to Spot and Prevent Them
Card Grading for Beginners: Complete Guide
Grading Chrome Cards: Topps Chrome, Prizm, Select Guide
Grading Autographed Cards: Process & Premiums
Self-Grade Cards: Pre-Grading Checklist
Pokémon Card Grading: Complete Beginner Guide
All articles by Sarah Martinez are editorially reviewed and based on original research, industry data, and hands-on hobby experience.
Browse all PreGradeCards articles