MLB Single Season Leaders - Home Runs

Barry Bonds 73 (2001)
Sammy Sosa 64 (2001)
Ryan Howard 58 (2006)
Alex Rodriguez 57 (2002)
Luis Gonzalez 57 (2001)
Alex Rodriguez 54 (2007)
David Ortiz 54 (2006)
Jim Thome 52 (2002)
Alex Rodriguez 52 (2001)
Andruw Jones 51 (2005)
Prince Fielder 50 (2007)
Sammy Sosa 50 (2000)
Albert Pujols 49 (2006)
Sammy Sosa 49 (2002)
Shawn Green 49 (2001)
Todd Helton 49 (2001)
Jim Thome 49 (2001)
Barry Bonds 49 (2000)
Ryan Howard 48 (2008)
Alex Rodriguez 48 (2005)
Adrian Beltre 48 (2004)
Albert Pujols 47 (2009)
Ryan Howard 47 (2007)
David Ortiz 47 (2005)
Alex Rodriguez 47 (2003)
Jim Thome 47 (2003)
Rafael Palmeiro 47 (2001)
Jeff Bagwell 47 (2000)
Troy Glaus 47 (2000)