Roger Clemens: Is He Telling The Truth?

(CBS/AP) "Not guilty, your honor."

With those four words in a D.C. federal court, retired baseball star Roger Clemens officially denied lying to Congress about using steroids or human growth hormone.

This should come as no surprise. The Rocket has remained defiant all along - despite the damning accusations and despite a fan base increasingly jaded by steroids era revelations.

Clemens' former trainer, Brian McNamee, said the pitcher did, in fact, use steroids and HGH. Even former teammate Andy Pettitte told congressional investigators that Clemens told him he had used HGH.

Clemens told Congress that Pettitte "misremembers" the conversation.

The pitcher came to Congress after being mentioned repeatedly in the Mitchell Report -- the damning breakdown of the sport's steroid problem released in 2007.

In front of a House committee the next year, Clemens said: "Let me be clear. I have never taken steroids or HGH." Before his indictment was handed down Aug. 19, Clemens was offered a plea deal that he turned down, and afterward, he showed no signs of backing down.

"I look forward to challenging the Governments accusations, and hope people will keep an open mind until trial," Clemens wrote on Twitter.

Prosecutors still don't believe him. Do you?