20 cards
Sandy Koufax Shohei Ohtani
Roger Maris Mickey Mantle
Ronald Acuna Jr. Hank Aaron
Bobby Witt Jr. George Brett
Cal Ripken Jr. Gunnar Henderson
Tony Gwynn Fernando Tatis Jr.
Pedro Martinez David Ortiz
Brooks Robinson Eddie Murray
Nolan Ryan Mike Trout
Lou Brock Bob Gibson
Mickey Mantle Aaron Judge
Nick Kurtz Jacob Wilson
Jackie Robinson Mookie Betts
Mike Schmidt Bryce Harper
Mike Piazza Francisco Lindor
Albert Pujols Stan Musial
Carl Yastrzemski Ted Williams
Ken Griffey Jr. Ichiro
Roki Sasaki Yoshinobu Yamamoto
Vladimir Guerrero Jr. Vladimir Guerrero
One entry per Base card — open a card to see all of its parallels. List 53 parallels and variants individually