Bobby Bonds hit his 38th home run of the season on September 9, 1973, but came up one home run shy of becoming the founding member of the club after hitting just one home run in the Giants' final 21 games.
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In 2002, both Vladimir Guerrero of the Montreal Expos and Alfonso Soriano of the New York Yankees were only one home run short of reaching 40–40 after achieving 40 and 41 stolen bases, respectively.
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In 2011, Matt Kemp came up one home run shy, as he hit 39 and stole 40 bases.
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Jose Canseco was the first to achieve this, doing so in 1988 after having predicted the feat in April of that year.
The newest, and fourth active, 40/40 Club is located inside the Barclays Center, the arena that the Brooklyn Nets play in.
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