David Forst won't return as general manager of the Athletics, with the team announcing Friday that the two sides have "mutually agreed to part ways." Assistant general manager Dan Feinstein will work as interim GM for the remainder of the season as the team begins searching for a permanent replacement. "David has been an integral part of the A’s and our success for nearly three decades," team owner and managing partner John Fisher said in a statement. "His leadership, dedication, and commitment to this team have helped shape our baseball operations department and position us for the future. We...