Due to the rainout and Lou Piniella's stated desire to keep Carlos Zambrano "on rotation" (throwing every fifth day), the Cubs shifted around their starters:
The Cubs moved Rich Hill's start to Saturday against Cincinnati, with Carlos Zambrano pitching Friday and Ted Lilly going Sunday. Jason Marquis will start Monday against San Diego and Wade Miller on Tuesday.
Makes sense to me, although it would have been interesting to see former Braves teammates Marquis and Greg Maddux face each other on Tuesday. Unless the Padres have any rainouts this weekend (unlikely, at Los Angeles), or shift things around themselves, Maddux will make his first appearance at Wrigley Field as a visiting player since 2003, next Tuesday afternoon.