We’ll find out, eventually. For now, her match with Konjuh, also 15, was a fascinating contextual preliminary to the Williams-Azarenka main event. For one thing, it was a showcase for yet another young American player of color, as Black is the daughter of a Jamaican-born father and an American mother. For another, the Tornado is the older of two tennis-playing sisters — her sister actually has the given name of Tyra Hurricane Black (and goes by Hurricane Tyra Black on the court).

Stretching the Williams connection, one of the lineswomen working the match happened to be Shino Tsurubuchi, who had the misfortune of calling a foot fault on Williams near the end of her losing 2009 final on Ashe against Kim Clijsters. In a 27-going-on-17 moment, Williams showed Tsurubuchi a ball and profanely told her that she might soon be having an unpleasant dining experience.

Black had no such outbursts, but she hobbled around with a wrap on her left thigh and took out her frustrations on herself. She shouted at the heavens. She slapped her leg. She hit herself with her racket.

“Um, I mean, it was hurting a lot,” she said of her leg, not the pain she inflicted upon herself.

Tennis is a lonely, nerve-jangling game at any age, but it was always harder to watch the teenagers — even the successful ones — deal with their angst in front of millions. The overbearing-to-abusive parents made it much, much worse.

Not to confuse the more quirky than scary Richard Williams with any of them — and what he did to develop Venus and Serena was nothing short of amazing — but it’s probably better that he hasn’t shown up in a while. His daughters are too old and have too much to say for themselves to have reporters chasing after their father with the hope he will say something outrageous.

Serena’s mother, Oracene Price, was in her box Sunday, sitting next to Venus. She has always been the model sports parent — thoughtful, reserved and supportive.

One of the best tennis parent stories happened in 1990 in New York when Pete Sampras won the first of his 14 Grand Slam events. His folks went to a mall in Southern California because they were too nervous to watch their 19-year-old son play for a title.