KBK Sports is holding weekend card auctions with autographs, rookies, and vintage items, with auctions ending Sundays at 10 P.M. EST; Boston Red Sox auctions with autographs, cards, and collectibles, ending Tuesdays at 10 P.M. EST; and Memorial Day weekend auctions with autographs, cards, and collectibles, ending Mondays at 10 P.M. EST, all between May 24-28.