Question: Michael Lewis is an American non-fiction author that was responsible for writing which sports novel published in 2003 that told the story of the Oakland Athletics baseball team and its new approach to gaining a competitive edge?
Context: Mount Davis, or Mt. Davis, is a section of 20,000 capacity seating at the Oakland–Alameda County Coliseum in Oakland, California, United States.  It was built in 1995 at the behest of Oakland City Council with the intent of bringing the Los Angeles Raiders American football team back to Oakland and is named after former Oakland Raiders owner Al Davis.  Since 2006, the top-tier seating of Mount Davis has been covered by tarpaulin during all Oakland Athletics baseball games.  Since 2013, the top-tier seating has also been covered by tarp during all Oakland Raiders games. The Arizona League Athletics are a Minor League Baseball team based in Phoenix, Arizona, which plays as a rookie level team in the Arizona League and has served as a farm team for the Oakland Athletics organization since 1988.  They play their home games at Lew Wolff Training Complex, the minor league spring training camp of the Oakland Athletics. The Oakland Athletics are a professional baseball team based in Oakland, California.  Before moving to Oakland in 1968, the team played in Philadelphia, Pennsylvania from 1901 through 1954 and in Kansas City, Missouri from 1955 through 1967.  The Athletics are members of the American League (AL) West division in Major League Baseball (MLB).  In baseball, the head coach of a team is called the manager, or more formally, the field manager.  The duties of the team manager include team strategy and leadership on and off the field.  The team has employed 30 different managers in its history.  The current Athletics' manager is Bob Melvin. The following is a list of Seattle Mariners uniform promotion games.  The games are often known as the "Turn Back the Clock Night" where they don throwback uniforms.  The Mariners have played games in promotional uniforms since the 1993 season, excluding 1997, and 2000–2004.  In 1994, the Mariners played the Oakland Athletics in a promotion titled "Salute to the [Seattle] Rainiers" where the two teams donned 1955 Pacific Coast League uniforms.  In 1995, the Mariners wore uniforms from the Seattle Steelheads, a short-lived Negro league baseball team based in Seattle, Washington.  Although not a "throwback", the Mariners have played two games in futuristic styled uniforms on a promotion night titled, "Turn Ahead the Clock".  The "Turn Ahead the Clock" game was originated by the Mariners promotional staff in 1998, and in 1999 the promotion was picked up by 19 other Major League Baseball (MLB) franchises.  Outfielder Ken Griffey, Jr. helped design the original 1998 uniforms.  Although the league-wide promotion has been criticized, the original Mariners' promotion proved successful.  In all, the Mariners have played 13 uniform promotion games.  Their all-time record is seven wins, and six losses.  The Mariners have played the Kansas City Royals three times, including their first jersey promotion game on May 21, 1993.  The Mariners have also played the Oakland Athletics (three times), the Milwaukee Brewers (twice), the Minnesota Twins (once), the San Diego Padres (three times), the Detroit Tigers (once), the Cleveland Indians (once), and the Los Angeles Angels of Anaheim (once).  The Mariners have played eight uniform promotion games at home, and six away. The Oakland Athletics all–time roster is a list of people who have played at least one game for the Oakland Athletics, Kansas City Athletics, or Philadelphia Athletics baseball teams of the American League, along with their primary position and years played for the team.  It does not include players for the 1871–76 Philadelphia Athletics, the 1882–1890 Philadelphia Athletics, or the 1891 Philadelphia Athletics.  The only Athletics player with no regular season appearances is Mark Kiger who only played for Oakland during two games in the 2006 American League Championship Series. Moneyball is a 2011 American sports drama film directed by Bennett Miller and written by Steven Zaillian and Aaron Sorkin.  The film is based on Michael Lewis's 2003 nonfiction book of the same name, an account of the Oakland Athletics baseball team's 2002 season and their general manager Billy Beane's attempts to assemble a competitive team. The Oakland Athletics (often abbreviated to A's) are an American professional baseball team based in Oakland, California.  The Athletics compete in Major League Baseball (MLB) as a member club of the American League (AL) West division.  The club plays its home games at the Oakland–Alameda County Coliseum.  The club has won nine World Series championships, the third most of all current Major League Baseball teams.  The 2017 season is the club's 50th in Oakland. KFIG is an AM radio station broadcasting at 940 kHz.  The station is licensed to Fresno, California and is owned by John Ostlund and Katrina Ostlund.  KFIG airs a sports radio format.  It carries syndicated programming from ESPN Radio, as well as some local sports shows in the afternoon and early evening.  KFIG is the Fresno-area station for both San Francisco Giants and Oakland Athletics baseball games.  When the teams are playing at the same time, Athletics games are instead carried on another local sports station, AM 790 KFPT, which is also an ESPN network affiliate.  KFIG and KFPT have similar arrangements when they carry both San Francisco 49ers and Oakland Raiders football games. Moneyball: The Art of Winning an Unfair Game is a book by Michael Lewis, published in 2003, about the Oakland Athletics baseball team and its general manager Billy Beane.  Its focus is the team's analytical, evidence-based, sabermetric approach to assembling a competitive baseball team, despite Oakland's disadvantaged revenue situation.  A film based on the book starring Brad Pitt and Jonah Hill was released in 2011. Michael Monroe Lewis (born October 15, 1960) is an American non-fiction author and financial journalist.  His bestselling books include "Liar's Poker" (1989), "The New New Thing" (2000), "Moneyball: The Art of Winning an Unfair Game" (2003), "" (2006), "Panic" (2008), " Home Game: An Accidental Guide to Fatherhood" (2009), "The Big Short: Inside the Doomsday Machine" (2010), "" (2011) and "Flash Boys" (2014).  He has also been a contributing editor to "Vanity Fair" since 2009.  His most recent book is called "The Undoing Project".
Answer: Moneyball