Behind the Diamond Cards can now take vendor application online with just a click of a button. Currently, we have 4 active shows running and are always looking for new vendors. Whether you sell vintage, stars, graded, or Pokemon there is a place for everyone here at Behind the Diamond. Get your applications in fast. Spots run out quickly. If you don't want to apply online, you can still fill out the "Become a Dealer" box and we will get back to you as soon as possible!​

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See current show schedules for both Babylon and Lynbrook. 

Inquire about booking tables for the upcoming Queensborough Community College Sports Card Show on March 15, 2026!