The 1993 Upper Deck Diamond Debuts Checklist Oakland Athletics #500 trading card features Brent Gates of the Oakland Athletics during the 1993 Major League Baseball season. As part of the Upper Deck set, this card is a valuable addition for collectors of baseball sports trading cards. With a focus on the MLB league, this card represents a piece of baseball history from the 1990s and is a must-have for fans of the Oakland Athletics and sports card enthusiasts alike.