Per Twitter, our burgeoning rivalry with the D'Backs will be diluted to include Colorado and San Diego.Ryan Divish @RyanDivish 5m5 minutes agoMLB has changed interleague play somewhat. Mariners, Astros, Rangers will rotate natural rivals with D'Backs, Rockies and Padreshttps://twitter.com/RyanDivish/status/776099368055091200
There is something incongruous with the phrase "rotating natural rivals"
Kind of like "genuine faux leather" or "synthetic diamond".