The Cardinals fire manager Mike Matheny just before the All-Star break, following a loss to the Reds that put them just one game above .500. Hitting coach John Mabry and assistant hitting coach Bill Mueller are also let go, while bench coach Mike Shildt is named interim manager, with a permanent replacement expected to be named when play resumes after the Mid-Summer Classic in a few days.

On July 14, 2018 The Cardinals fire manager Mike Matheny just before the All-Star break, following a loss to the Reds that put them just one game above .500. Hitting coach John Mabry and assistant hitting coach Bill Mueller are also let go, while bench coach Mike Shildt is named interim manager, with a permanent replacement expected to be named when play resumes after the Mid-Summer Classic in a few days.

Source
Baseball Reference July 14