Random Debut:
I thought we had already reached the peak, but I'm really hoping this is the peak with 9 players reaching 400 career home runs this year. Because of that I'll break it into two posts.
Derrek Lee is the first player to reach 400 home runs this year. Derrek Lee hit 331 home runs in real life, and also saw success in the original when he hit 331.
Jon Morrison played during the 1800's, and was the second player to reach 400 home runs this year.
Another player from the 1800's, Chief Roseman reached 400 career home runs this year. Roseman hit 17 home runs in real life.
2012 home run derby participant Mark Trumbo also reached 400 career home runs this year. While it's still early in his career, he has hit 61 home runs so far.
Fred Pfeffer is the third player from the 1800's to hit 400 career home runs this year. Pfeffer hit 94 home runs in real life.