Question: What former American Major League Baseball (MLB) left-handed pitcher was the focus of a best-selling 2005 biography, written by Jane Leavy, an award-winning American former sportswriter and feature writer for the Washington Post?

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Ralph Lumenti: Raphael Anthony Lumenti (born December 21, 1936) is an American former professional baseball player, a left-handed pitcher who appeared in 13 games played, six as a starting pitcher, between 1957 and 1959 for the Washington Senators of Major League Baseball.  He batted left-handed, stood 6 ft tall and weighed 185 lb .

Warren Spahn Award: The Warren Spahn Award is presented each season by the Oklahoma Sports Hall of Fame to the best left-handed pitcher in Major League Baseball (MLB).  The award is named after Warren Spahn, who holds the MLB record in wins for a left-handed pitcher with 363.  The Warren Spahn Award was created in 1999 by Richard Hendricks, the founder of the Oklahoma Sports Museum, to honor Spahn, who resided in Oklahoma.  The award was presented at the Masonic Temple in Guthrie, Oklahoma until 2009, when the Bricktown Rotary Club became a sponsor of the award.  Since 2009, the award is presented at the annual Warren Spahn Award Gala, hosted by the Bricktown Rotary Club of Oklahoma City at the Jim Thorpe Museum every January.

Kenny Rogers (baseball): Kenneth Scott Rogers (born November 10, 1964) is a former American Major League Baseball (MLB) left-handed pitcher.  During a 20-year baseball career, he pitched from 1989 to 2008 for six different teams.  He won the 1996 World Series with the New York Yankees against his hometown Atlanta Braves and played in the 2006 World Series with the Detroit Tigers.  In addition to being known for his fielding (winning five Gold Glove Awards), he pitched the fourteenth perfect game in major league baseball history.  In 2008, he was the oldest baseball player in the American League.

Bill Wilkinson (baseball): William Carl Wilkinson (born August 10, 1964 in Greybull, Wyoming) is an American former baseball pitcher.  A left-handed pitcher, Wilkinson played for Major League Baseball's (MLB) Seattle Mariners in 1985, and from 1987 to 1988.  During his career, he had a 5–8 record, 4.56 earned run average (ERA) and 103 strikeouts in 113⅓ innings pitched.

Don Rudolph: Frederick Donald Rudolph (August 16, 1931 – September 12, 1968) was an American Major League Baseball (MLB) left-handed pitcher.  He pitched six seasons for the Chicago White Sox, Cincinnati Reds, Cleveland Indians, and Washington Senators from 1957 to 1964.

Rusty Gerhardt: Allen Russell "Rusty" Gerhardt (born August 13, 1950) is an American former professional baseball player.  He was a left-handed pitcher who appeared in 23 games, 22 in relief, for the San Diego Padres of Major League Baseball in .  Gerhardt was named "Sandlot Player of the Year" by the National Baseball Congress in 1970 while attending Clemson University.  He was selected by the Padres in the 12th round of the 1972 Major League Baseball Draft.  Born in Baltimore, Maryland, Gerhardt stood 5 ft tall and weighed 175 lb .

Kirk Rueter: Kirk Wesley Rueter (born December 1, 1970) is a former left-handed pitcher in Major League Baseball, and is the Giants franchise record holder for career wins by a left-handed pitcher in the San Francisco Era.  Rueter played for the Montreal Expos and the Giants and made most of his career appearances as a starter.  Rueter attended and played for Murray State University.  He is nicknamed "Woody" after his resemblance to a character in the animated movie "Toy Story", although during his time in Montreal he was often referred to as "Captain Kirk".  Rueter was born in Centralia, Illinois, grew up in Hoyleton, Illinois and graduated from Nashville Community High School District 99 in Nashville, Illinois in 1988.

Sandy Koufax: Sanford Koufax ( ; born Sanford Braun; December 30, 1935) is a former American Major League Baseball (MLB) left-handed pitcher.  He pitched 12 seasons for the Brooklyn/Los Angeles Dodgers, from 1955 to 1966.  Koufax, at age 36 in 1972, became the youngest player ever elected to the Baseball Hall of Fame.

Jane Leavy: Jane Leavy (born December 26, 1951) is an award-winning American former sportswriter and feature writer for the Washington Post.  She is the author of the critically acclaimed 1990 comic novel "Squeeze Play", which was called "the best novel ever written about baseball" by Entertainment Weekly.  She also wrote a best-selling 2005 biography of Sandy Koufax.  She lives in Washington, D.C.  She is originally from Roslyn, New York, and graduated from Barnard College in 1974 and Columbia University School of Journalism in 1976.  She has a house in Truro, Massachusetts on Cape Cod.

Joe Engel: Joseph William Engel (March 12, 1893 – June 12, 1969) was an American left-handed pitcher and scout in Major League Baseball who spent nearly his entire career with the Washington Senators, and went on to become a promoter and team owner in the minor leagues.  He was born in Washington, D.C. as one of six children of a German immigrant who owned a bar/hotel next door to the Washington Post building in the District of Columbia.  Engel was married twice and lost his only child, son Bryant in a traffic accident in Nov. 1930 at age 9.  Engel himself died in Chattanooga in 1969 at age 76.

Supporting paragraphs: Jane Leavy Sandy Koufax
Answer: Sanford Koufax