What they should have done in this situation was a 4 game series to start the year where you play 2 games in another country and then allow them a 2 day break for travel and finish up the series back home in the States. Maybe even play the final 2 games at a neutral site in the states if it's like Mariners vs Yankees or something like that. That way neither team is really at a disadvantage when they get back to the States.