Pittsburgh — DICK’S Sporting Goods, Inc., the largest U.S.-based, omnichannel sporting goods retailer, has named Edward W. Stack, chairman and chief executive officer, to assume the role of executive chairman and continue as chief merchant on February 1, 2021. He also will oversee key strategic growth initiatives for the company. Stack has served as chairman and CEO of DICK’S since he and his siblings bought his father’s two small sporting goods stores in upstate New York in 1984. Today, DICK’s has more than 850 stores. The company’s board of directors …