USA today says Livan, CBS says Loaiza. That doesn't really help you.
I thought this was a "which one do you think is better" thread. You should probably change the title of the post to include more information, like which one will start tomorrow. You might get more replies.
For the record, I like Loaiza as a spot start against Oakland too. If he doesn't get the ball tomorrow, he'll get it Thursday.