Federal prosecutors were shocked by Andy Pettitte’s testimony related to Roger Clemens

The desire of the federal government linked with the case of Roger Clemens was following: they desired to prove that this athlete had lied before the Congress about administration of anabolic steroids and HGH. But the government couldn’t achieve this goal. It was expected that Andy Pettitte would say that Roger Clemens had told him that he had applied the banned medicines during a conversation in 1999 or in 2000. But the testimony of Andy Pettitte was shocking for prosecutors. This man stated that he couldn’t confirm that Roger Clemens had used steroids and HGH because he was not sure.
In fact, did the testimony of Andy Pettittte shock the prosecutors of Roger Clemens? This person swore for the 2008 Congressional hearings on usage of steroids in the Major League Baseball that Roger Clemens acknowledged that he had taken HGH. But he provided opposite testimony at the Barrett Prettyman Federal Courthouse in Washington.
Michael Attanasio, a defense attorney for Roger Clemens, asked Andy Pettitte whether he can claim that he is 50-50 that he has understood wrongly Roger Clemens about HGH. Andy Pettitte answered that he is indeed 50-50 about this aspect.
When the prosecutors heard Pettitte’s answer, they became confused. They claimed that Andy Pettitte never answered this way, when he was asked several times.
The U. S. District Court Judge Reggie Walton noted that he understood that Andy Pettitte’s answer has been conflicted. In fact, his statement was following: “I don’t know”.
The attorneys for Roger Clemens used the moment of the federal prosecutors’ embarrassment. They asked the judge to ignore Andy Pettitte’s testimony because he was 50-50. According to the attorneys, he probably misunderstood Roger Clemens or he can’t remember the details of the conversation.  
The government has stated that the jury still allows taking in consideration the testimony of Andy Pettitte. ASUSA Dunham has pointed out that under federal rules jury is allowed to choose which testimony to believe. He hopes that the jury will disregard the testimony that doesn’t support the government.
Thus, the testimony provided by Andy Pettitte and his wife caused problems. Testimonies of his wife during the first trial led to the declaration of a mistrial by the judge Walton.
Pettitte affirms that he is Roger Clemens’ friend. Clemens must also claim that they are friends after the last testimony of Andy Pettitte.