Astros Spring Training Non-Roster Invitees

On Tuesday, the Astros announced that 17 non-roster players have been invited to Spring Training. They are:

RHP Mark Appel
LHP Darin Downs
RHP Jordan Jankowski
RHP Brady Rodgers
RHP Jason Stoffel

C Luis Flores
C Tyler Heineman
C Roberto Pena

IF Carlos Correa
IF Matt Duffy
IF Nolan Fontana
IF Dan Johnson
IF Colin Moran
IF Gregorio Petit
IF Joe Sclafani

OF Andrew Aplin
OF Preston Tucker

Of those who haven't made their major league debuts yet, Preston Tucker, Matt Duffy and Jason Stoffel are, in my opinion, the closest to being ready with Brady Rodgers, Jordan Jankowski, Andrew Aplin, Joe Sclafani and Tyler Heineman not far behind. I don't think that Appel and Correa will be given legitimate consideration out of Spring Training this year, but I also wouldn't be surprised if either of them forced the issue. Of the others, Fontana missed a lot of time last season due to injury; Colin Moran is still very young; Pena could be inserted in a lineup today defensively, but needs more work on the bat; and Flores (about whom I know little) is behind a logjam of catchers already on the 40-man roster.