Having followed Danielle since her arrival at UVa...
I am a HUGE fan. I like a lot of what's being said about Danielle and her game, but one thing I think most analysts are either missing or not fully appreciating is her competitive spirit. She is a FIERCE competitor. I suppose it's the way she was introduced to the game, on the public courts of St Pete, rather than some stuffy country club, playing against outmatched kids her own age. Instead, she was playing pickup games against women and men, never knowing in advance how good they were. That's how she learned.
She grew up fighting for her successes, and she still does.
The backhand is, indeed, world class, and she is extremely smart in her tactics, but for me, the reason she's moving up the rankings so fast is she's figured out THIS game...the pro game...and now she has the confidence to attack it like she's attacked every level before this.
Who thought she would win the NCAA singles as a sophomore? Nobody. To be honest, it would not surprise me much at all if she won this tournament in Miami. She's that tough and gritty.