NEW YORK -- New York Yankees left-hander Andy Pettitte was placed on the 60-day disabled list Thursday.

The 40-year-old Pettitte suffered a a fractured left fibula in Wednesday's win against the Cleveland Indians after getting struck on the left shin with a line drive.

Pettitte, who will not undergo surgery, is not eligible to return from the DL until Aug. 28. General manager Brian Cashman, appearing on "The Michael Kay Show" on ESPN New York 98.7 FM on Thursday afternoon, said he expected Pettitte to be out until about Sept. 1.

Pettitte's injury occurred hours after the Yankees placed ace CC Sabathia on the disabled list because of a strained muscle in his leg.

Although Major League Baseball's non-waiver trade deadline is just more than one month away, the Yankees will look to handle the losses of Pettitte and Sabathia from within, sources told ESPN The Magazine's Buster Olney.

"I'd prefer not to go outside," Cashman said. "Obviously, we do go outside. We have done that before. This is part of the process."

Freddy Garcia, who recorded the win Wednesday with 2 1/3 scoreless innings of relief, will replace Pettitte next Monday against the Tampa Bay Rays.

Adam Warren make his major league debut on Friday for the Yankees against the Chicago White Sox.

Pettitte hasn't pitched a full season since 2009. In 2010, he only made 21 regular-season starts because of injuries. Last year, he sat out after his retirement announcement.