Mark Lazarus is out at Time Warner (NYSE: TWX) unit Turner Broadcasting Systems; he was president of the Turner Entertainment Group. Three of his direct reports are being promoted and will report to Turner Broadcasting chairman and CEO Phil Kent.

-- Steve Koonin, president, Turner Entertainment Networks: Responsible for TBS, TNT, Turner Classic Movies and truTV; adding advertising sales & marketing for those properties and Peachtree TV.

-- David Levy, president, Turner Broadcasting Sales: Continues as president of Turner Sports, and to oversee ad sales for sports and entertainment digital businesses. Will lead sales strategy & operations across Turner’s domestic portfolio of entertainment, animation and news networks and businesses, working closely with Koonin, Snyder and Jim Walton, president of CNN Worldwide.

-- Stuart Snyder, president and COO of Turner Animation, Young Adults & Kids Media: Responsible for Cartoon Network, Boomerang, Adult Swim and their digital extensions, as well as broadband game service GameTap, SuperDeluxe and animation production.

Update: Turner continues to split digital responsibilities. Despite Koonin’s additional ad responsibilities, Levy will still handle sales for sports and entertainment. He’ll also continue to run one of the company’s most interesting efforts to date: Play ON, broadband sports PPV and subscriptions. Meanwhile,m Snyder handles digital for his division.

-- Lazarus is leaving after 18 years. The last such major re-org was when he became president five years ago. Multichannel: Kent told staffer by email “the company’s latest organizational structure did not hold a ‘role of scale that Mark was interested in.’”