I believe Newman is injured at the moment.
Hurl is probably getting a pass because he's a lock to make the 46, whereas the imports playing tonight are not. The Bombers are going to start their best 7 NIs but they still need to evaluate the LB jobs as if they are going all import there. Who knows, that might be what happens.
Yantz likely has a PR spot waiting for him if he wants it. Portis, on the other hand, won't be guaranteed that luxury.
I would say the battle is in the #3 QB spot between Marve and Portis. Ed Tait made a good argument on that in the Big Show this morning.
Marve is carrying the benefit of the experience being the short yardage guy last year and the hype from the fans. Problem is he openly said that he will pursue NFL after this season.
If Portis can show that he can show that he can perform the #3 QB's duties and more, Marve will probably release or get traded.