[She thought it would be hard. There's an aura around Koufax. He's thought to be the J.D. Salinger of baseball, the pitcher's version of Joe DiMaggio.] I knew what the established wisdom was, ... He's a recluse. He's dour, taciturn, aloof.

The only mystery is why we find it surprising that someone opted out, ... It makes him different.

When I explained the premise of the book -- that it wasn't going to be a quickie kiss-and-tell but a serious work where I use his life in baseball to tell a larger story ... he said he didn't have any interest in taking part.

I wanted it to be big, ... Not about a person or a career but about the time. ... I wanted to use a game of his (to highlight) and there's nothing quite like a perfect game.