In MLB, Eddie Murray with 504 ... the most HRs he hit in a season was 33 in 1983.
Barry Bonds hit the most home runs in a season with 73 in 2001.
The most home runs Hank Aaron hit in one season was 47, in 1971.
Hank Aaron had the most home runs for a regular season.
Dave Klingman holds the record for most home runs hit during a retirement season. He hit 35 home runs in his 1987 final season.
Roger Maris hit 61 home runs in the 1961 season.
The most home runs hit in one season by Derek Jeter was 24 in 1999.
In MLB history, the player who hit the second most home runs in a season was Mark McGwire who hit 70 in 1998.
Blue Jays RF Jose Bautista has hit 31 home runs this season.
No ... the most home runs Cobb hit in a season was 12 in 1921 and 1925.
Mark McGwire had over 70 home runs in one season