"There have been a lot of changes, which you had to do when you've got some guys that are down. But it's been remarkable to me, some of the guys that have stepped up," Collins said. "Every year you've got guys that emerge upon the scene that make a big difference. Whether it's last year with Kelly and Juan and Tyler Clippard and Addison Reed and (Yoenis Cespedes) to Noah (Syndergaard), Steven Matz, and even last year with Jeurys (Familia). And now this year all of a sudden, you've gotten some guys down, and some guys have stepped up and are getting some opportunities. We've made some good additions, guys that have played well, and that's why I think the growth of some of these young guys right now at this time of year, with a lot at stake, how much better are they going to be in spring training?"