Here's a list of the 20 or younger crowd from last year. Trey McNutt, 20 (A-/A+/AA) Josh Vitters, 20 (A+/AA) Nick Struck, 20 (A-/A+) Junior Lake, 20 (A+) Jeffry Antigua, 20 (A-) Su-Min Jung, 20 (A-) Matthew Cerda, 20 (A-) Austin Kirk, 20 (SS/A-) Matthew Szczur, 20 (SS/A-) Robinson Lopez, 19 (A-) Hak-Ju Lee, 19 (A-) Jae-Hoon Ha, 19 (A-) Aaron Kurcz, 19 (SS) Cam Greathouse, 19 (SS) Arismendy Alcantara, 18 (SS) Austin Reed, 18 (RK) Ryan Hartman, 18 (RK) Ben Wells, 18 (RK) Reggie Golden, 18 (RK) With the notion that the Cubs only need a few of these guys to hit, it's going to be a lot of fun watching them progess.