Gregg Goldstein Charles Barkley is out to conquer a new arena. The NBA Hall of Famer is exec producing his first scripted series, “The Line,” based on a bestselling exposé of the gambling scandal that nearly destroyed college basketball.RTG Features, the new sister studio to basketball media outfit SLAM, is producing the multi-episode one-hour historical drama, partnering with exec producers Barkley and the company he co-founded, Round Mound Media.