"That's the plan," Pettitte said.
Pettitte, who has been out for two months with his groin injury, will pitch for the Yankees' Double-A affiliate Trenton in the Eastern League playoffs on Tuesday. The game will be in either Harrisburg, Pa., or Altoona, Pa.
Yankees pitching coach Dave Eiland said the team didn't set up the schedule to avoid having Pettitte return against the Tampa Bay Rays, who are the Yankees' next opponent on Sept. 21 after the Orioles.
"That it is just the way it falls," Eiland said.
Eiland said nothing is set in stone so Pettitte's major league return date could change, but at least Pettitte thinks it will be Sept. 19, which would be exactly two months since he went on the DL with his groin injury.
Andrew Marchand covers baseball for ESPNNewYork.com.