In 1998 Mark McGwire and Sammy Sosa took sports fans by storm, going back and forth, trying to break the MLB single season home run record. At that time the record was 61 and it was held by Roger Maris since 1961. On September 7, 1998, Big Mac, 34 years old, slugged home run number 61, off Mike Morgan of the Chicago Cubs, tying the record. It was an amazing thing to witness because Sammy Sosa was on the opposing team with 58 home runs. The following day, Mark broke the record, against the Cubs still, off Steve Traschel. It was wasn't until September 13 that Sosa hit #61 and on that same day he also hit #62. Mark McGwire would finish that season with 70 home runs, setting a record no one thought would ever be broken. Sosa finished with "just" 66 home runs. Fast forward to 2001, just 3 seasons later, Barry Bonds at age 36, breaks McGwire's record while walking 177 times, giving him 33 less official plate appearances. What Chris Davis is doing this season is right on pace with these guys and we could see Davis possibly reach the 60 home run mark, which hasn't been done since Bonds (73) and Sosa (64) did it in 2001. Sosa is the only player to hit 60 home runs in a single season, THREE TIMES!