In Major League Baseball (MLB), the 40–40 club is the group of batters, currently six, who have collected 40 home runs and 40 stolen bases in a single season.
The six players with a 40–40 season are Jose Canseco, Barry Bonds, Alex Rodriguez, Alfonso Soriano, Ronald Acuña Jr., and Shohei Ohtani.
[5] Jose Canseco, Barry Bonds, Alfonso Soriano, and Ronald Acuña Jr. were outfielders in their 40–40 seasons, while Alex Rodriguez played shortstop.
Ohtani is the only player to achieve both in the same game, stealing his 40th base in the fourth inning and then hitting a game-winning, walk-off grand slam in the bottom of the ninth for his 40th home run.
The other retired members of the 40–40 club have been linked to the use of performance-enhancing drugs;[17] Bonds and Canseco were each implicated in the December 2007 Mitchell Report,[18][19] while Rodriguez admitted in 2009 to using steroids.
[22] The feat has never been achieved in Nippon Professional Baseball; the closest effort was Koji Akiyama's 1987 season, in which he hit 43 home runs and stole 38 bases.