Before whatever injury was announced, I probably would've said Fedun, as based on his limited NHL experience (12GP 2+5=7) and AHL consistency (avg. 8G, 33P over last four AHL years), he seemed overdue for a run as a 7D. Now, he's at a disadvantage since he's missing at least one week of camp, but I'll still give him the nod I guess.
Falk isn't a guy I really want to see in the lineup, but also someone I have no issue scratching, so I can see the case there. Burgdoerfer got praise from Trotz at past camps and finally got that NHL contract, so hard to say if he has more in him without isolating on him at camp and in exhibitions. I want Nelson and Guhle playing a lot, so Rochester and Prince Albert respectively for them, unless a camp injury gives them an opportunity to seize. Austin's depth for the Amerks, as are Strachan, Bennett, and Geiger.