Sorry Mafia, no proof there. I can't take that answer seriously.

The commission is there for a reason. It's their job to make sure everyone is clean. Manny has never tested positive for any PEDs. There's actual proof he didn't do anything.

Picture yourself back in school. You took an exam, passed it. Someone in your class claimed he saw you cheating and he's demanding the teacher or the administrators make you take an even more in depth test to prove you weren't actually cheating. Do you sit there and say, "I passed the test already, why do I have to retake it?" or "Sure, I'll take the test again cause someone said I cheated?"