"I would say it's the worst part of my job," Girardi said. "I always find it difficult, especially when a guy is doing really well. You look at Nuno and the job that he has done for us, but Andy [Pettitte] is coming back and will fill in that spot basically. We want to keep him stretched out."
Girardi said that the organization's plan is to have both Nova and Nuno starting at Triple-A. Nova had been pitching in relief for the Yankees since being activated from the disabled list on May 24.
"[The plan for Nova is] to be a starter, because that's what we envision him as," Girardi said. "We need to get him stretched out, doing what he's capable of doing."
Nova allowed one run in five innings against the Mets on Wednesday, lowering his ERA to 5.16 this season. Nuno posted a 1-2 record with a 2.25 ERA in five games (three starts) during his first big league callup.
"It's a job; promotion, demotion, I'm still around baseball, pitching every five days," Nuno said. "No matter what level I'm at, I'm still going to work hard and produce to help the team win."
Bryan Hoch is a reporter for MLB.com. Follow him on Twitter @bryanhoch and read his MLBlog, Bombers Beat. Josh Vitale and David Wilson are associate reporters for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.