What Coaster said
Most managers use these three days (for about half the teams, it's four days) off to rearrange their starting pitching rotation.
I know that here in TBay, Maddon has already announced that he's going to go with Shields on Friday, then Kazmir, Garza, Price and Neimann
It allows him to break up the LH and also moves the two rookies to the back end. (though we'll note that Neimann has for the most part pitched like a Top3 starter).
This makes for an interesting scenario as Shields will thus start two games in a row, since he worked today before the Break.