Through the games of May 16, 2008 that would be Lance Berkman of the Houston Astros with 15.
Through the 2008 season, that is 24 in the 1999 season.
As of the start of the 2008 season, the most home runs David Ortiz has hit in a season is 54 in the 2006 season.
Through the 2008 season, that is Steve Balboni with 36 in 1985.
As of the start of the 2008 season, that would be Ken Griffey Jr. who hit 56 home runs in 1997 and 1998.
Through the 2008 season: Career: Willie Mays, 646 Season: Barry Bonds, 73 in 2001
As of the 2008 season, that is Ralph Kiner who hit 54 HRs in 1949.
Through the 2008 season, that is Mickey Mantle with 536.
In MLB through the 2008 season, the record for home runs by a team in one season is 264 by the 1997 Seattle Mariners.
Alex Rodriguez hit 35 home runs in 2008 for the New York Yankees.
Dave Klingman holds the record for most home runs hit during a retirement season. He hit 35 home runs in his 1987 final season.
From 2008 through the 2011 season, Derek Jeter hit 45 home runs.
Dave Klingman holds the record for most home runs hit during a retirement season. He hit 35 home runs in his 1987 final season.