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The Yankees' top doctor says Alex Rodriguez's left hip injury was his own fault, according to a response Dr. Christopher Ahmad filed in Bronx Supreme Court.

(William Perlman/The Star-Ledger)

NEW YORK — Alex Rodriguez's bum left hip?

It's his own fault, said the doctor the Yankees third baseman is suing for medical malpractice.

The 2012 injury was the result of "culpable conduct" of Rodriguez, lawyers for Dr. Christopher S. Ahmad said in a response to Rodriguez's suit. Ahmad is the Yankees' head team doctor.

The response, however, doesn't explain exactly why Rodriguez was to blame.

Calls to the attorneys representing both Ahmad and Rodriguez hadn't yet been returned.

In Rodriguez's Oct. 4 lawsuit, he alleges Ahmad gave him an MRI on Oct. 11, the same day Rodriguez went 1-for-4 in the Yankees' 2-1 loss to the Orioles in the American League Division Series.

But, the suit says, Ahmad didn't tell him the result of the MRI — that Rodriguez had a torn labrum in his left hip. And Ahmad still cleared him to play in the postseason, it says.

Ahmad's answer also denies virtually all of Rodriguez's allegations.

The Yankees went on to get swept by the eventual American League champion Tigers. Rodriguez had just two hits in 16 at-bats during those playoffs.

Rodriguez's suit also mentions New York Presbyterian Hospital as a defendant. Lawyers for Ahmad and the hospital also filed change-of-venue motions with the court Wednesday, hoping to move the proceedings to Manhattan.

Ahmad isn't the only person Rodriugez has battled this offseason.

On Tuesday, Rodriguez filed a 33-page amended lawsuit against Major League Baseball for allegedly destroying his career and ending his endorsement deals. In the amended suit, Rodriguez calls Selig "cowardly" for not testifying in Rodriguez's suspension appeal hearing.

The slugger's appeal of a 211-game ban for alleged performance-enhancing drug violations ended last Thursday at MLB's Park Avenue offices. An arbitrator is expected to either uphold or reduce the penalty in January.