New York City Mayor Bill de Blasio was booed Monday as he delivered the ceremonial first pitch at Citi Field.

Wearing a Mets jersey, the liberal mayor was at the ballpark to mark Opening Day between the New York Mets and Washington Nationals.

In a video posted online by the New York Daily News, fans can be heard greeting de Blasio with loud boos:

Fans also turned to Twitter to report the not-so-flattering welcoming:

De Blasio soundly booed as he throws out the first pitch at Citi Field, as if it's his fault the Mets couldn't trade Ike Davis.
Heres Video of NYC Mayor de Blasio Getting Booed Throwing Out First Pitch at Citi Field
@Brokelyn
Brokelyn
Bill de Blasio was booed at a NY sporting event, he's now officially our mayor
Heres Video of NYC Mayor de Blasio Getting Booed Throwing Out First Pitch at Citi Field
@tim_bays
Tim Baysinger
De Blasio just got booed by 40,000 people. #openingday
Heres Video of NYC Mayor de Blasio Getting Booed Throwing Out First Pitch at Citi Field
@cho_jason0
Jason Cho

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