What is the oldest rivalry in baseball?

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Tags

1. #greatest
2. #other
3. #played
4. #baseball
5. #teams
6. #remarkable
7. #edges
8. #scoreboards
9. #between
10. #giants
11. #rivalry
12. #slightest
13. #dates
14. #times
15. #century
16. #oldest
17. #their
18. #these
19. #dodgers