DivotMaker wrote: However, you are presuming he is guilty based on a report that contains accusations from a fairly shaky witness from the sound of things.
Pettite made McNamee a creditable source of information by immediately confirming everything that he said about him regarding HGH was true. What motivation would McNamee have to tell the truth to Mitchell regarding Pettite's involvement, then make up a complete lie about Clemens? That's one thing that Roger has no real answer for.
Roger is saying that McNamee is lying regarding his involvement and everything that he told Mitchell. What's his motivation to do so? He's already got immunity from Mitchell and told them anything and everything that they wanted to know. Drug dealer or not, it's not like he had some personal axe to grind with Clemens where he would specifically lie about one player that he named for the report.
Roger on the other hand has all of the motivation in the World to lie. Plus, he know that it's very unlikely that he'll get caught in a lie (ala Palmeiro) because he'll never get tested, never was tested for HGH, there's no smoking gun out there. He probably knows that there won't be any evidence to support the Mitchell report... just McNamee's story.
Roger was likely very careful about his drug use (unlike some of these idiots), getting it from just this one trainer throughout his entire career (while he was with different teams). He doesn't have any loose ends out there and only one person's story to try and discredit. No cancelled checks, no injection buddies on the team shooting each other up in a toiler stall, no suppliers, no supplement labs, etc etc.