Pittsburgh Pirates Isaac Mattson Autograph Session

Welcome to the Isaac Mattson Autograph Session!

Come meet the Pittsburgh Pirates' Pitcher Isaac Mattson at Baseball Card Castle for an exclusive autograph session! Get your favorite memorabilia signed and take a photo with him!

$15.00 autograph on a flat item. (ie: photo or baseball card)

* TICKET SPECIAL! 4 Flat Items for $40.00! *

$20.00 autograph on a premium item. (ie: baseball, jersey, helmet, or bat)

$5.00 per inscription/personalization. (Must have a ticket for autograph)

📦 Mail-ins are accepted. Your item must be at Baseball Card Castle 20555 U.S. Hwy 19, Cranberry Twp., PA 16066, by Wednesday, September 17th. Please include a copy of your ticket(s) receipt, legible note of your desired inscription (if applicable), and a pre-paid return shipping label in your mail-in.

8x10 photos and baseballs will be available to purchase the night of the event. Skip the line and pre-purchase your 8x10 photo here on Eventbrite and pick it up at check-in!

Host or Publisher Baseball Card Castle