The Oakland Athletics began to use a more quantitative approach to baseball by focusing on sabermetric principles in the 1990s. This initially began with Sandy Alderson as the former general manager of the team when he used the principles toward obtaining relatively undervalued players. His ideas were continued when Billy Beane took over as general manager in 1997, a job he held until 2015, and hired his assistant Paul DePodesta. Through the statistical analysis done by Beane and DePodesta in the 2002 season, the Oakland A's went on to win 20 games in a row. This was a historic moment for the franchise, in which the 20th game was played at the Alameda County Coliseum. His approaches to baseball soon gained national recognition when Michael Lewis published "" in 2003 to detail Beane's use of Sabermetrics. In 2011, a film based on Lewis' book - also called "Moneyball" - was released and gave broad exposure to the techniques used in the Oakland Athletics' front office.