SmackDown Live is not only leaving USA Network—it's also leaving Tuesdays.
Marisa Guthrie of the Hollywood Reporter noted the deal will be worth $1 billion over five years. The program is expected to continue airing live.
The move to Fox will mark the first time WWE has aired regularly on one of the so-called Big Four networks. Some WWE programming has aired occasionally on NBC during the company's deal with NBC Universal, though it's largely been confined to special occasions. USA Network will continue airing the flagship Monday Night Raw program.
SmackDown is currently averaging 2.59 million viewers per week on USA. Expanding the audience will likely lead to an increase in ratings and exposure for WWE while providing Fox with appointment live television on Friday nights, a rarity in today's on-demand culture.