Riley was removed from Sunday's contest against the Mets in bottom of the fourth inning with left side tightness, Justin Toscano of The Atlanta Journal-Constitution reports.
Riley's removal from the contest has been described as precautionary according to Atlanta. The third baseman finished his night going 1-for-2 with a single and a strikeout. Riley's status will likely be updated following the conclusion of the team's series finale with New York.