it doesn't matter when the rosters get locked, because the teams will just put the Americans on their roster at the first event.
I don't see the problem if players guest.....it has been something occuring in paintball for many years. And many Americans are committing to play the entire MS. What about Markus Nielsen? Since he is playing all the MS with Syndicate, should he not be allowed to guest in the NPPL with an American team? Because if a player cannot appear on two rosters with two different teams, then that would be the case.....sucks for him. That's just ridiculous...