Originally Posted by sTiMa34

Gertner he taking about the Natural Rivalries in Major League Baseball. American League vs National League..You play one natural rival every single year from the other league in 2 series, one home and one away. I think the other teams you play from the other league changes every year, and you don't play a home and home series with them. You only play one series with the other leagues teams - Unless of coures, it's your natural rival.

I really don't know any of the natural rivals though so I can't help you out on your list.