Not so too many butt injection details to be had, but the following is still notable — we’ve not heard a similar admission from, say, Scott Schoeneweis. From the AP / SI.com :

Andy Pettitte used human growth hormone to recover from an elbow injury in 2002, the New York Yankees pitcher said two days after he was cited in the Mitchell Report. Pettitte said he tried HGH on two occasions.

“If what I did was an error in judgment on my part, I apologize,” Pettitte said Saturday in a statement released by his agent. “I accept responsibility for those two days.”