Mark McGwire: On the merits of his career, he'd be a Yes. But here's the evidence that he cheated: 1) In February 2005, he issued a flat-out denial that he ever used illegal performance-enhancing drugs. In March 2005, he refused to repeat that, under oath, during his congressional testimony; 2) Congressman Tom Davis, then the chairman of the House Government Reform Committee, divulged that McGwire attempted, on the day before the infamous hearing, to admit to steroid use in return for immunity. That's evidence that we'll allow into the court of public opinion. No.