There were a couple of goofy ballpark issues during games the past week.
As you likely know the Phillies "hosted" the Blue Jays for a 3-game set. The games were originally scheduled for Toronto, but were moved due to the G-8 in Toronto. Though the games were in Philly, Toronto batted last and the DH was also used. It took a little bit of work to get our programs to handle this case (it also happened back in Sept. 2007 in a Mariners/Indians game), so we've been showing these as Blue Jay home games. That will now change these will be presented as Phillies home games with the home team batting first. I believe home/road should always match the location, so that is the way are presenting them.
Second, MLB sprang a neutral site series on us with the Marlins hosting the Mets in San Juan. For the purposes of WPA, I'm treating this as a neutral NL park, which may not be accurate, but is close enough (I believe) for this case.