Matt Duff
Former MLB pitcher, St. Louis Cardinals · Baseball - MLB
AI-generated identification · may be incorrectBefore you rely on this
This report was produced by an AI model from a photograph. It is not an authentication, a certificate of authenticity, or an appraisal. Verify important details with a qualified third-party authenticator before buying, selling, insuring, or valuing an autograph. Read the full disclaimer.
Era
circa 2000s, active playing career
Item Type
Official Major League Baseball signed on the sweet spot
Condition
Excellent condition with clean white leather and crisp blue ballpoint ink, minor natural toning
Overall Assessment
A clean-looking single-signed baseball of a modern relief pitcher with good eye appeal, best submitted to JSA or PSA/DNA to confirm signature legitimacy before valuation
AI Estimated Value
Not an official valuation$20 - $50 unauthenticated, up to $100 with third-party authentication
AI can make mistakes. This estimate is for general guidance only, not a professional appraisal. Actual value depends on authentication, condition, provenance, and market demand.
Get It Authenticated
JSA or PSA/DNA for standard authentication, costing approximately $25 to $50 with a few weeks turnaround