I've flown to and from Europe, and it usually takes a couple of days to overcome the jet lag on the way back to North America. I know these guys are professionals, but you can't discount the effect of travel, IMO.
Oh yeah I totally agree. I went to England last year and thats a 5 hour time difference. I had no problem staying in England but when I came back to Toronto, I was exhausted. It took me about 4-5 days to return to normal and not feeling like going to sleep early.
Anyway I called a Canada/USA final. I didnt post that prediction anywhere here but just told my friends and so. I'm starting to believe in a Canada/Finland final (since the World Cup started). Anything can happen though.