Of course the Serena, Venus, Henin, Hingis, Davenport, Sharapova stretch, was a great ratings era as well for the WTA.
Martina was fantastic for the WTA. A true prodigy or 'wunderkind'. In 1997 she was the most televised person in the world. And she was a huge asset for the WTA until she retired.
Excerpt from a 2000 article:
"Hingis signs with Sanex, will wear WTA Tour patch"
Ending months of speculation, No. 1-ranked tennis player Martina Hingis signed an endorsement deal with the European body care company Sanex, the title sponsor of the WTA Tour.
The multiyear contract pays Hingis in the low seven figures annually, a source said.
Sanex measured the time Hingis is actually on TV globally, said Ingrid Bentzer, director of tennis sponsorships for Sanex, and found that she literally was televised more hours than anyone else in the world
"Hingis is simply the most well-known, most-shown face in TV all over the world
," Bentzer said.
I doubt Sharapova can match this. The grunting may be one of the main reasons. Martina was pure talent, elegance and no screaming/grunting at all. Add her sweet face and nice smile and you've got the most televised person on the globe.