Joe Maddon is giving his five starting pitchers an extra day's rest.
Brian Matusz will be a spot starter in the Cubs' series finale against the Seattle Mariners on Sunday night at Wrigley Field. The Cubs optioned reliever Justin Grimm to Triple-A as a corresponding move.
"We'll use that day however we need to to the best of our abilities," said Jake Arrieta. "We'll find a way to use that day to get some work done and get better and move forward. At this time of year, every one of us might need to refine something.
"It actally might not be a bad idea. Hopefully Matusz is ready to come out and compete and be effective, and we'll move on."
Prior to Saturday's game, Maddon indicated that the club is looking to give his starters more days off.
"As we’ve talked about all along, attempting to try to give our regular five a rest in a particular moment, so we’re considering doing something right now," Maddon said. "We’re not ready to announce it yet just to be honest, but we are considering."
Matusz signed a minor-league deal with the Cubs last month.
The 29-year-old southpaw has spent the majority of his career with the Baltimore Orioles. In eight MLB seasons, he is 27-41 with a 4.85 ERA and 460 strikeouts.
As Matusz makes his Cubs debut Sunday, having a familiar face in the clubhouse might help ease any nerves.
"Matusz and I played together for quite a while," said Arrieta, who spent time with Matusz in Baltimore. "I've seen him pitch extremely well his rookie year. He can pitch, he's a smart guy. He's got some really good pitches that he knows how to use effectively. I look forward to watching him pitch and catching up with him."