NL - Albert Pujols - 42
AL - Jose Bautista - 54
As of July 23, 2014, Joe Abreu is leading the AL with 29 home runs, and Anthony Rizzo is leading the NL with 25.
In 2009 Albert Pujols led the National League with 47 home runs. Carlos Pena, and Mark Teixeira led the Amercan League with 39.
Miguel Cabrera and Chris Davis
Rafael Palmeiro with 569 career home runs.
The 2009 New York Yankees hit 136 home runs at Yankees Stadium, and 108 home runs on the road for a league leading 244.
In 2007 Alex Rodriguez led the American League in home runs with 54
In 2014, outfielder Mike Trout won the American League Most Valuable Player Award after posting a .287 batting average with 36 home runs and a league-leading 111 runs batted in. He also led the AL with 115 runs scored. Trout was the MVP runner up in 2012 and 2013, both times finishing behind Miguel Cabrera of the Detroit Tigers.
Roger Maris led the Major League in home runs 1 time. It was in 1961 with 61 home runs.
Andruw Jones led the National League with 51 home runs in 2005, Alex Ridriguez hit 48 home runs to lead the American League.
Barry Bonds holds the major league records for most home runs in a career (762) and most home runs in a season (73).
Napolean Lajoie of the Philadelphia Athletics led the American League in home runs in 1901 with 14.
Albert Pujols of the St. Louis Cardinals led the league with 42 home runs in 2010.
In 2010, Albert Pujols hit the most home runs in the National League, with 42.
Socks Seybold of the Philadelphia Athletics led the American League in home runs in 1902 with 16.