"I think you have to evaluate, but that's where you get your other guys, basically," Girardi said of Pettitte's planned pitch-count progression. "They have that start where they get around 95 pitches, and that's the fifth start, and then you try to back them up a little bit, try to rejuvenate them a little bit."
Pettitte is attempting to make a big league comeback after retiring from a 16-year career in pinstripes following the 2010 season. The left-hander, who owns 240 career wins, gave up two hits and no walks while striking out three in pitching for Class A Advanced Tampa on Sunday.
Girardi expressed his desire for Pettitte to have a "normal Spring Training" in terms of workload, and he suggested this week that Pettitte's pitch count would be raised by roughly 15 pitches the next time out. He threw 47 on Sunday, 31 for strikes.
The Yankees skipper also said he will not implement a six-man rotation, but the time to decide how it will all shake out is a long way off.
"I've got to see how guys are throwing," Girardi said. "I think that's the easiest way to do it. We're all assuming Andy's gonna get back to where he was, and I'm one of those guys that kinda has that belief, too. But we've got to make sure."