Devil’s advocate: Why not to play the kids

So here's why Philadelphia Union couldn't play the young guys constantly this year:

If you play them too much, you could lose them in the expansion draft.

The Vancouver Whitecaps and Portland Timbers will each pick 10 players in the expansion draft this November. That's 20 players from the current 16 teams, which means some teams are going to lose two players (but likely not more).