122 different players have had a total of 295 40-HR seasons.
Yastrzemski, Carl (1)
104
52
Jason Giambi, Jose Bautista, Carlos Beltran, Edwin Encarnacion. Those players for sure.
David Eckstein has 34 career home runs as of the 2009 season.
5
six
Yastrzemski, Carl (1)
Zero. Ryan Howard of the Philadelphia Phillies led the majors with 48.
Albert belle
mccutchen,a.jones,konerko
25 players
Foster bench Perez
12.
As many as the players can hit. There is no limit.
The most home runs Babe Ruth hit in a single season was 60. He did this in 1927.
Is this supposed to be some sort of multiple-choice question? There are lots of players who've never hit 50 home runs in a season. My guess would be Hank Aaron who hit 755 career home runs but never more than 47 in a season.