First the mayors got involved in a friendly bet, but now the Toronto-Kansas City rivalry has taken on new heights.
The public libraries got involved!
It all started Tuesday night when the Kansas City Public Library sent a playful tweet after the Royals blew out the Blue Jays in Game 4.
However, like Blue Jays fans, the Toronto library still has faith in their hometown team.
Even Toronto Batman got involved.
It was a Twitter exchange for the ages.