Fox saw revenue dip 8% last quarter to $4.23 billion on weaker advertising due in part to tough comps from the year before. The fiscal second-quarter numbers hit the day after Fox with Disney and Warner Bros. Discovery set a fall launch date for joint streaming sports venture with. There’s no name or price yet for the service, which will pool the sports rights of the three media companies. CEO Lachlan Murdoch will say more on a call at 8:30 ET. The shares, which were up more than 5% after the news yesterday ...