Why You Can’t Clone Koufax is a book that relies on traditional statistical categories--rather than sabermetrics--to make our case. At the same time, however, we make no excuses or alibis for any events that may have occurred during a player’s career. In our book we compared Sandy Koufax to many of the greatest pitchers in baseball history. Our numerous comparisons are replete with irrefutable facts and figures to support our contention.