Noah Syndergaard has been scratched from Thursday afternoon's start against the Braves, manager Terry Collins announced.
Syndergaard later told reporters that the area around his shoulder and biceps began irritating him this past Monday and Tuesday. He described the mild pain as 'discomfort.'
He will undergo an MRI and could pitch Sunday depending on the results.
Syndergaard said he took anti-inflammatory medication earlier this week, played catch Wednesday, and 'felt great,' but then his arm stiffened up again in the cold and wet weather, which restricted him from lifting his arm above his head.