Yankees general manager Brian Cashman is not ready to reveal the Yankees’ playoff pitching scene just yet. 

Cashman said that everyone besides CC Sabathia and Mariano Rivera is going to have to earn a role on the postseason roster.

Theoretically, rookie Ivan Nova could earn a spot over A.J. Burnett or Javier Vazquez.

“Everything will be decided in these last three weeks,” Cashman said Wednesday night. “The guys who we think give us the best chance to win are the guys who are going to pitch.”

Andy Pettitte threw four rehab innings at Yankees Double-A Trenton Thursday. He threw four scoreless innings while letting up just two hits. Cashman said that he will likely make another rehab start before returning to the Yankees.

Cashman did not comment about the status of individual starters. He added that “nothing is guaranteed for anyone” besides CC Sabathia, and that it is likely that pitchers will be moved around between the bullpen and starting rotation.

Read more MLB news on BleacherReport.com