Another poster on the game preview thread posted that (through second hand knowledge) Foles will likely start given the wet, slippery conditions. Take it with a grain of salt but it's not out of the realm of possibilities.
season in wet weather so I don't think that's a factor. If you have to sit your #1 quarterback because you're afraid he's going to get hurt, then you probably brought him back too fast. So I'd bet on Wentz playing.
So long sailing
Bye bye sailing
Ha