I'm not convinced Purich and Tran will work out...but happy to be proven wrong. Yes they are very early in their careers but the 4 jumping elements aren't too solid and they are still tinkering with throws to see what works. In an Olympic year there is usually at least one pair team that 'techs' their way to a clean skate and surprises for one of the spots. Purdy and Marinaro CAN do that as on a good day they can hit all their jumping elements. They don't get GOE on lifts and twists but they can do enough to get difficult base scores...so they have a chance. Consistency and experience can win out.
I just have a feeling the finish order will be MT/M, D/R, L/S, P/M, P/T...but wow what a race for 3rd.