According to the book, "The Rocket That Fell To Earth" about Roger Clemens, author Jeff Pearlman touched on Piazza in the chapter about the 2000 World Series.
Former Boston Red Sox first baseman Reggie Jefferson tells Pearlman, "He's a guy who did it, and everybody knows it. It's amazing how all these names, like Roger Clemens, are brought up, yet Mike Piazza goes untouched."
Another veteran player agreed, saying, "There was nothing more obvious than Mike on steroids."
According to Pearlman, when that player is asked what are the odds, on a scale of 1 to 10, that Piazza had used PEDs, the player replies:
I've always liked Piazza, but I just wanted to throw this out there. I don't think anyone would be particularly surprised to learn this is true.