Deletion of Orioles-Pirates rivalry

Comment: The articles all fail  with a lack of multiple sources of non-|routine coverage from |independent, reliable sources.  In the absence of these sources being identified, the articles appear to be |original research on rivalries weakly supported by citations to a statistics website, baseball-reference.com
Stance: delete
Cited policy: Wikipedia:Notability (WP:GNG||WP:ROUTINE||WP:INDEPENDENT||WP:OR)