Re: French Open Ratings
Lest you forget that even if tennis is the number 5, 6 sport in the United States, it's still the largest market by far, and it's viewing numbers even as a niche sport rival the rest of the world. That's why the American market is so coveted.
Tennis Channel opens itsself every year for free to several cable providers during the French Open. The potential viewing numbers alone for that period - when available as a niche channel to all, is extremely profitable for them.
As well - Venus has only added to Serena's legacy in recent years to be completely honest. The package of the sisters is a big sell, but more often than not, it's Serena who's the main attractor. I'd rate Venus below Maria and Serena as the top 3 players in the United States. Wozniacki was groomed as the successor to them, although Vika is climbing now.