Maine won 1-0 against Toronto his last time out, while Oakland has lost Haren's last two starts. Also, books figure it is tough to win 5 in a row because your bullpen's best ptchers were probably used to save the game - leaving just the bums available for the next day - but that is not the case with Oakland because they have blown out people 4 out of the last 5 games.
I just took Oakland now - I know I can buy some Baltimore at a better price tomorrow.