(Bloomberg Businessweek) -- Every Wednesday, Tony Khan sets up his makeshift office in the dark. On this particular evening in September, he’s at Arthur Ashe Stadium in the Queens borough of New York, maneuvering through a maze of scaffolding beneath a stage to get to his chair propped in front of a screen with 15 camera feeds. Khan scans between his scribbled notes and the pro wrestlers punching, grappling and suplexing each other ...