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Major League Baseball Auctions Customer Service representatives are available to assist you by Monday through Friday, 9 AM - 6 PM EST. All weekend or holiday Customer Service requests will be administered on the next business day.

Customer Service Form

Your opinion matters and we'd love to hear it! To submit your comments and suggestions, or for any general customer service inquiries, please e-mail customerservice@mail.auctions.mlb.com and include your name, e-mail address, and any applicable auction listing ID or order ID information pertaining to your inquiry.

If your question is in regard the MLB authentication program or the hologram that appears on your item please e-mail authentication@website.mlb.com or visit the MLB Authentication Home Page.

Have a question? Check out our FAQ section.