The mayors of New York City and Chicago are getting in on the action between the Mets and the Cubs.

Mayor Bill de Blasio and Chicago Mayor Rahm Emanuel tweeted that they're placing a friendly wager on the Mets-Cubs series.

De Blasio is putting up Grimaldi's Pizza and beer from the Bronx's Gun Hill Brewery.

If the Mets win, Emanuel is offering up deep-dish pizza, Lagunitas beer and a charitable donation.