Thanks, tridentric!
Here are your 25 calendar dates:
January 6, 2013 Early Wynn
March 9, 2013 Arky Vaughan
March 30, 2013 Ripper Collins
April 7, 2013 Adrian Beltre
May 1, 2013 George McQuillan
May 4, 2013 Ben Grieve
May 19, 2013 Gil McDougald
June 8, 2013 Van Mungo
June 10, 2013 Ken Singleton
July 13, 2013 Stan Coveleski
July 26, 2013 Hoyt Wilhelm
August 7, 2013 Mike Trout
August 8, 2013 Matt Whiteside
August 14, 2013 Joe Horlen
September 3, 2013 Luis Gonzalez
September 6, 2013 Red Faber
September 19, 2013 Joe Morgan
October 5, 2013 Sam West
October 12, 2013 Rick Ferrell
October 31, 2013 Dave McNally
November 18, 2013 Tom Gordon
November 21, 2013 Stan Musial
December 11, 2013 Lee Maye
December 12, 2013 Steve Farr
December 26, 2013 Carlton Fisk