Cubs pitcher Carlos Zambrano was scheduled to start on Wednesday night, but a rainout pushed back his return to the rotation. Zambrano hasn't started a game since April 20 and struggled as a member of Chicago's bullpen. He'll most likely start this weekend against the Astros and the game against the Pirates will be made up on Monday. "I think we'll pitch [Zambrano] in Houston," Piniella said. "We'll try to juggle our rotation to see if we can pitch somebody different Monday." "Our preference is to get Zambrano right back on the mound pitching," he added. "I'll get together with the pitching coach on our flight and we'll figure this out."