Sabermetrics, the search for objective knowledge about baseball through statistical analysis, has taken over the national pastime. The authors argue that this approach began as a useful corrective but has come to harm baseball. The book demonstrates that the so-called moneyball approach, based on sabermetrics, offers only limited guidance for assembling a team, managing games, and evaluating player performance. Equally important, the obsession with statistics and vision of the game as wholly predictable obscure baseball's spectacular improvisational quality. It is the game's unquantifiable and relentless capacity to surprise--the source of wonder so central to its greatest stories and personalities--that informs any real appreciation of baseball.