Matz will likely have his next start pushed back to Thursday due to right side stiffness, Adam Rubin of ESPN New York reports.

EDGE Analysis

Details are still relatively scarce, but GM Sandy Alderson suggested Tuesday that the issue may be related to how Matz slept overnight. Manager Terry Collins was cryptic when talking about Matz's status Tuesday, saying Bartolo Colon may be a postseason starter "by default," but the team clarified that it still expects Matz to be on the NLDS roster. The injury is not believed to be at all related to the left lat issue Matz dealt with earlier this year.