BOB COSTAS: I first heard this suggested by Marty Appel, a former official with the New York Yankees who's been around baseball for a long time, and I agree with it. I think what baseball ought to do, at the very least, is have a page at the beginning of the record book that says that, while baseball has greater historical continuity than any other American team sport, there have often been disruptions and changes in the game.
And so, even as we compare these statistics across the eras, which is part of the appeal of baseball, we have to take into account those changes: dead ball, lively ball, segregated, integrated, entirely day ball, primarily night ball, train travel, travel by air, the advent of a reliance on relief pitching. And, certainly, one of the major disruptions is the steroid era.
And one of the things that has to be said about the steroid era: It didn't evolve; it erupted. And you had players who were already in the big leagues in the late '80s and early '90s who never approached what they did from the mid '90s on. And that's what made it so suspicious.