There’s only one way to celebrate National Baseball Card Day: Tear open a pack of Topps cards. The anticipation of the big reveal makes you feel like a kid again. Every time. You remember when you got that Richie Allen rookie card that nobody else had. So there you go, hoping for, say, a Cody Bellinger or an Aaron Judge or a Ronald Acuna. Instead you pull out a Miguel Rojas, a Kolten Wong and a Melvin Upton Jr. It happens. There’s also a card of James Loney in the uniform of the Texas Rangers, a team he never officially played for, and a reprint of a 1989 Bill Schroeder. Oh well, there will always be another pack — and the wonderful anticipation that comes with it. P.S. Watch for it: Boston-New York at Yankee Stadium, today. Ex-Ole Miss star Drew Pomeranz (11-4, 3.36 ERA) will pitch for the Red Sox against Luis Severino in Game 2 of the latest huge series between these ancient rivals. The Yankees won an electric Game 1 on Friday night. … Perfect Game All-American Classic at San Diego’s Petco Park, Sunday. Hattiesburg’s Joe Gray and Brandon’s J.T. Ginn will participate in this high school showcase to be televised by MLB Network at 3 p.m. (Both also played in the Under Armour All-America Game at Wrigley Field.) Gray, an Ole Miss commit, is one of the six finalists for Perfect Game’s Jackie Robinson Award, which goes to the organization’s national player of the year. Gray batted .477 with seven homers and 19 steals for Hattiesburg this past season.