As far as generating personal interest, right now it is mostly Serena while awaiting up and comers like Taylor Townsend, Madison Keys, and Sloane Stephens. I love what Mary Cirillo calls " Big Babe Tennis"; Tennis with power and more power. the kind of tennis exemplified by Serena Williams, who by virtue of the greatest serve the game has ever seen, awesome power with which to execute incredible shots, and an ability to hit great shots under pressure, is, far and away the best woman to ever play the game. It would be impossible to imagine the prior era soft hitters beating her head to head.
After Justine Henin got away with the hand up/wait and did not own up to it, I always looked forward to the Williams?henin matches. The same as for Williams/Capriati after the latter benefitted from three blatantly bad calls and the double fault no call in the 2004 US Open.
When Serena is on her game, no one beats her. She is that good; That much better than the very talented field.
VAU - Totally agree that the Williams sisters completely changed the game. Mr. Williams envisioned "big babe" tennis and both sisters exemplify that game. As a tennis player and coach, I respect Serena and her "best ever" serve. She has awesome power and hits winners off balance, off her back foot, and out of position. Kudos to all that. However, like a basketball game with mostly dunks, there is more to tennis than--serve--point, 2 hits--point, serve-point, 3 hits--point, 2 hits-point. That's one reason I like clay over the old grass. (Today's grass is slower and no one serves and volleys anyway.) Basketball is movement, passing, inside, outside, pretty moves, awesome fakes, cross-over dribbles, blocks--I could go on and on. If a team was the most powerful and could dunk the majority of time they would be World Champs, but I wouldn't enjoy the game of basketball. Serena's game is like that. I like variety of shots, change of spins, Wrawrinka's one-handed backhand up the line, Henin's classic one-handed backhand (short career--still a winner), Radwanska's off beat game, and of course, the Swiss Miss teenager who almost won the golden slam while beating Venus.
Anyway, to each his own. That's what makes the world go round. I enjoy and savor the subtleties and beauty of the game. Power has it place, but there is a point of diminishing returns ---for me. Federer, Murray, and JOker probably are the closest to the "total package" of variety, beauty and power.