<Dl> <Dd> 73 , by Barry Bonds , San Francisco Giants ( NL ) , 2001 ( 162 game schedule ) <Dl> <Dd> In part due to 9 / 11 terrorist attacks , the then - recently set record of only three years by McGwire , and Bonds ' poor relationship with the media and some fans , Bonds ' record setting was not as publicized as the previous chases . Bonds was initially chased closely by Sosa and Luis Gonzalez of the Arizona Diamondbacks , but Gonzalez faded late and finished with 57 , while Sosa finished closer with 64 to become the first player to exceed 60 home runs in three separate seasons . McGwire was not a factor during what would be his final major league season , as the injuries that had plagued him for much of his career finally took their toll , although he still hit at a pace that would have put him near 50 if he had played a full season . Bonds ' slugging percentage of . 863 broke the major league record set by Ruth in 1920 . As happened with McGwire 's record , Bonds ' connection to steroids resulted in his being among the accomplishments questioned in the era . </Dd> </Dl> </Dd> </Dl>
<Dl> <Dd> 73 , by Barry Bonds , San Francisco Giants ( NL ) , 2001 ( 162 game schedule ) <Dl> <Dd> In part due to 9 / 11 terrorist attacks , the then - recently set record of only three years by McGwire , and Bonds ' poor relationship with the media and some fans , Bonds ' record setting was not as publicized as the previous chases . Bonds was initially chased closely by Sosa and Luis Gonzalez of the Arizona Diamondbacks , but Gonzalez faded late and finished with 57 , while Sosa finished closer with 64 to become the first player to exceed 60 home runs in three separate seasons . McGwire was not a factor during what would be his final major league season , as the injuries that had plagued him for much of his career finally took their toll , although he still hit at a pace that would have put him near 50 if he had played a full season . Bonds ' slugging percentage of . 863 broke the major league record set by Ruth in 1920 . As happened with McGwire 's record , Bonds ' connection to steroids resulted in his being among the accomplishments questioned in the era . </Dd> </Dl> </Dd> </Dl>
who hold the mlb single season homerun record
who hold the mlb single season homerun record
Barry Bonds
Barry Bonds