Problem with these altitude games - don't need to overexert otherwise you'll fade. Mexico have the harder game left on paper, but Austria haven't been training in altitude so should burn out early in that match. Korea planned their training camp specifically for this fixture, altitude in Salt Lake, pre-tournament they spent alot of time in Mexico preparing. Either of these two should be looking to win this group as they're better acclimatised than any, but it could come down to goal advantage considering this show.