The BNP Paribas Open generates estimated $374 million in two-week period, 20 percent more than 2011.
The Russian must beat Agnieszka Radwanska in her final round-robin match and get some help to advance to the semis.
It's the American's worst loss, in terms of games won, since 1998, when she was 16.
The Spaniard defeated Pierre-Hugues Herbert 6-1, 6-1; Federer beat Gilles Muller in just 46 minutes.
"Novak will spend the following several days with the baby and his wife Jelena, after which he travels to Paris,” says his website.
The final player to reach the WTA Finals outlasted a prospective year-end No. 1.
The Russian was one of the great ball-strikers and anti-celebrities of his generation.
Thoughts on Murray's desperate quest for London, and what it could mean for his future.
The ATP's year-end race picks up again in Basel and Valencia. A look ahead at both events.