Arrieta will make '14 debut vs. Cardinals

CINCINNATI -- Monday's postponement forced the Cubs to reorganize their rotation, which mostly just involved figuring out where to insert Jake Arrieta among the starting five. On Tuesday, manager Rick Renteria made it official: the right-hander will make his season debut on Saturday at Wrigley Field, when the Cubs host the second game of a three-game set with the Cardinals.

Arrieta, who was supposed to start Wednesday in Cincinnati before rain washed out the opener with the Reds, will fall in line behind Jeff Samardzija, Edwin Jackson and Travis Wood, who will start Friday. Jason Hammel will follow Arrieta to round out the rotation.

Arrieta has been eager to return to a Major League mound after missing most of the first month of the season rehabbing from a sore right shoulder. He was looking forward to Wednesday's scheduled outing against the Reds, but has no issue waiting it out a few more days before he gets his season started in earnest.

"I can't worry about it too much," Arrieta said. "If it rains, it rains. We just get pushed back and get an extra day. It's not always a bad thing."