The Babylon Sports Card Show, presented by Behind the Diamond Cards, returns to the American Legion at 22 Grove Place in Babylon Village on Sunday, September 20, 2026, from 9:00 AM to 3:00 PM. This is the South Shore of Suffolk County's reliable monthly sports card show, a legion-hall event with a loyal dealer base and a crowd that comes back every month. If you collect on Long Island and want a traditional Sunday morning show without the drive to Nassau or the city, this is the one.
Sports cards are the focus, as the name says. Baseball is especially strong, with vintage Topps, modern Bowman and Chrome prospects, and graded rookies from every era, and the football, basketball, and hockey tables are well stocked with rookies, autographs, numbered parallels, and slabs from PSA, BGS, and SGC. Memorabilia and supplies fill out the room, and a few dealers bring Pokemon and other TCGs, though those are a small share of the floor. Behind the Diamond Cards, the promoter, is a local shop, so expect the show to reflect what Long Island collectors are actually chasing.
The show runs a single session from 9:00 AM to 3:00 PM. Admission is a low door fee typical of legion-hall shows; check the promoter's listing on ontreasure.com or Behind the Diamond Cards' social pages for the current price. Kids are welcome and the atmosphere is family-friendly. Dealers here buy collections, and Sunday morning is a good time to bring one for offers.
The American Legion is on Grove Place in downtown Babylon Village, a short walk from the Babylon LIRR station on the Babylon Branch, which makes this an easy trip by train from anywhere on the South Shore or from Penn Station. Drivers will find free parking at the legion and on village streets on a Sunday morning. Main Street and Deer Park Avenue are a block away with cafes and restaurants for after the show.
Who should attend: Suffolk County sports card collectors of every level, baseball set builders, autograph and slab buyers who want to inspect cards in person, parents introducing kids to the hobby, and dealers looking for a dependable monthly show with a real local following. The relaxed pace makes it a good first show.
Tips: come at opening for the best selection, bring cash, and bring a list of the players and sets you are working on. If you are selling, sort and price your cards ahead of time so dealers can make fast offers. The show continues monthly, with October 18, November 22, and December 20, 2026 dates already on the calendar. For table reservations and updates, follow Behind the Diamond Cards on Instagram or Facebook. Because the show runs monthly, regulars use it to build sets steadily rather than in one big spend, and dealers often hold requested cards for known customers from one month to the next, which is a nice perk of a community show this size.