Phillies' roster dominated by youngsters

Phillies manager Pete Mackanin discusses the potential for Tommy Joseph after a strong showing in 2016There will be injuries, surprises and disappointments.

But at the end of Spring Training, the Phillies will announce their Opening Day roster. It is early, but here is a pre-camp prediction of what it might be:

Spring Training 2017 previewCatchers (2): Cameron Rupp will be the Opening Day catcher, and Andrew Knapp is the early leader for the backup job. But non-roster invitees Ryan Hanigan and Bryan Holaday will make things interesting because of their experience. Manager Pete Mackanin has said a few times he would like a veteran backup catcher.

Cameron Rupp delivers a strong throw to second…