Tribal DDB Worldwide named David Hernandez managing director and executive creative director for the Chicago office. Previously, Hernandez was senior partner, executive creative director at OgilvyOne, Chicago. At Tribal, Hernandez's clients include Lowe's, McDonald's, Jones Apparel Group, State Farm and the Wm. Wrigley Jr. Company. He reports to Elizabeth Ross, president, Americas, and global chief marketing officer of Tribal DDB Worldwide.