Barry Lamar Bonds (born July 24, 1964) is an American former professional baseball left fielder who played 22 seasons in Major League Baseball (MLB). Bonds was a member of the Pittsburgh Pirates from 1986 to 1992 and the San Francisco Giants from 1993 to 2007. He is considered to be one of the greatest baseball players of all time.

Recognized as an all-around player, Bonds received a record seven NL MVP awards and 12 Silver Slugger awards, along with 14 All-Star selections. He holds many MLB hitting records, including most career home runs (762), most home runs in a single season (73, set in 2001), and most career walks. Bonds led MLB in on-base plus slugging six times and placed within the top five hitters in 12 of his 17 qualifying seasons. For his defensive play in the outfield, he won eight Gold Glove awards. He also stole 514 bases, becoming the first and only MLB player to date with at least 500 home runs and 500 stolen bases. Bonds is ranked second in career Wins Above Replacement among all major league position players by both Fangraphs and Baseball-Reference.com, behind only Babe Ruth.

Despite his accolades, Bonds led a controversial career, notably as a central figure in baseball's steroids scandal. He was indicted in 2007 on charges of perjury and obstruction of justice for allegedly lying to a grand jury during the federal government's investigation of BALCO, a manufacturer of an undetectable steroid. After the perjury charges were dropped, Bonds was convicted of obstruction of justice in 2011, but the conviction was overturned in 2015. During his 10 years of eligibility, he did not receive the 75% of the vote needed to be elected to the National Baseball Hall of Fame. Some voters of the Baseball Writers' Association of America (BBWAA) stated they did not vote for Bonds because they believe he used performance-enhancing drugs.

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