Duda is dealing with a stiff back and he received an injection Monday, Adam Rubin of ESPN.com reports.

EDGE Analysis

Rubin's report explains why Duda, the Mets' best option at first base, was left out of the lineup for Tuesday's series opener against Max Scherzer and the Nationals. Given that Duda received an injection to treat his sore back Monday, it's possible that he'll require more than one day off before he can get back on the field. Eric Campbell will take Duda's place at first base Tuesday and he could do so again should Duda miss additional time.