33 cards
Cam Smith Jose Altuve
Kristian Campbell Alex Bregman
Buster Posey Barry Bonds
Johnny Bench Joey Votto
George Brett Bobby Witt Jr.
Black
Roger Clemens CC Sabathia
Vladimir Guerrero Vladimir Guerrero Jr.
Ken Griffey Jr. Randy Johnson
Cal Ripken Jr. Gunnar Henderson
Chipper Jones Ronald Acuna Jr.
Josh Jung Jace Jung
Mark McGwire Reggie Jackson
Sandy Koufax Clayton Kershaw
Red
Jackson Jobe Rhett Lowder
Joey Votto Barry Larkin
Mark McGwire Ozzie Smith
Shota Imanaga Greg Maddux
Don Mattingly Dave Winfield
Mike Piazza Juan Soto
Albert Pujols Mike Trout
Black
Nolan Ryan Ivan Rodriguez
Black
Jimmy Rollins Mike Schmidt
Mike Schmidt Adrian Beltre
Paul Skenes Dylan Crews
CC Sabathia Prince Fielder
Francisco Lindor Juan Soto
CC Sabathia Alex Rodriguez
Kyle Tucker Sammy Sosa
Chase Utley Trea Turner
Dylan Crews James Wood
Black
Bobby Witt Jr. Gunnar Henderson
Black
Nick Kurtz Jacob Wilson
Red
Larry Walker Joey Votto
One entry per Base card — open a card to see all of its parallels. List 21 parallels and variants individually