<P> In Major League Baseball ( MLB ) , the 50 home run club is the group of batters who have hit 50 or more home runs in a single season . Babe Ruth was the first to achieve this , doing so in 1920 . By reaching the milestone , he also became the first player to hit 30 and then 40 home runs in a single - season , breaking his own record of 29 from the 1919 season . Ruth subsequently became the first player to reach the 50 home run club on four occasions , repeating the achievement in 1921 , 1927 and 1928 . He remained the only player to accomplish this until Mark McGwire and Sammy Sosa matched his feat in 1999 and 2001 , respectively , thus becoming the only players to achieve four consecutive 50 home run seasons . Barry Bonds hit the most home runs to join the club , collecting 73 in 2001 . The most recent player to reach the milestone is Aaron Judge . </P>
<P> In Major League Baseball ( MLB ) , the 50 home run club is the group of batters who have hit 50 or more home runs in a single season . Babe Ruth was the first to achieve this , doing so in 1920 . By reaching the milestone , he also became the first player to hit 30 and then 40 home runs in a single - season , breaking his own record of 29 from the 1919 season . Ruth subsequently became the first player to reach the 50 home run club on four occasions , repeating the achievement in 1921 , 1927 and 1928 . He remained the only player to accomplish this until Mark McGwire and Sammy Sosa matched his feat in 1999 and 2001 , respectively , thus becoming the only players to achieve four consecutive 50 home run seasons . Barry Bonds hit the most home runs to join the club , collecting 73 in 2001 . The most recent player to reach the milestone is Aaron Judge . </P>
who hit the most homeruns in one season
who hit the most homeruns in one season
Barry Bonds
Barry Bonds