The MLB regular season hasn't even started, but the Oakland Athletics and Seattle Mariners are already battling as divisional foes are keen to do.
This particular face-off between the American League West squads, though, was limited to social media -- where trash talk ensued Wednesday as Oakland's Twitter account hurled an unprompted insult in response to a Mariners tweet.
@Mariners Congratulations on inventing a day so that you could finally get a ring.
— Oakland A's ud83cudf33ud83dudc18u26beufe0f (@Athletics) March 15, 2017
While it's true that the Mariners are one of only two teams never to have appeared in a World Series, the jab was bold coming from the A's.