The Diamondbacks on Monday made the first of what could be multiple changes to their coaching staff by dismissing pitching coach Charles Nagy.

The club did not confirm the move; the team is expected to announce changes to the staff sometime this week.

When reached for comment Nagy responded with a text message that read “All I would say is thank you to the Diamondback organization and everyone in it for the opportunity to be part of such a terrific group.”

Nagy spent three seasons as the pitching coach under manager Kirk Gibson drawing praise in 2011 for his work with a division-winning staff that included Cy Young candidate Ian Kennedy.

But Diamondbacks pitchers struggled this season posting a staff ERA of 3.92 the sixth-worst in the National League and registering 29 blown saves tied for the most in the majors. For the second year in a row the Diamondbacks finished with an 81-81 record.