Serena Williams now faces the future of American tennis at the Australian Open

Before today's quarter finals of the 2015 Australian Open, top ranked little sister Serena Williams retweeted, Billie Jean King's observation of older sister Venus.   "I'm inspired by @Venuseswilliams every time she takes the court," tweeted King. "Great to see her healthy, competing and loving what she does."
At 34, Venus was facing 19 year old American up and comer Madison Keys for a shot at the semis and a chance to play her sister for the first time in 5 years. Despite her best efforts, the 18th ranked Williams simply couldn't match Keys' power and shot making loosing in a hard fought three setter, 6-3, 4-6, 6-4. Keys felt a sharp pain in her left thigh and called the trainer.
"I've had problems with that part of my leg," said Keys. "It was an overwhelming moment. I wanted to catch it before I did real damage. The pain killers and adrenaline helped me get through it."

There will short rest and recovery time for Keys who tomorrow faces little sister Serena. The 18-time major winner used her sister as inspiration and had little trouble disposing of last year's finalist Dominika Cibulkova, 6-2, 6-2.
"I'm happy to be in the semis," said a very hoarse Williams who has been fighting a cold all week. "I would love to win, but she's playing very well (Keys). No matter what, an American is going to be in the final." Their opponent, no matter what will be Russian.  The other semi final features No. 2 seed Maria Sharapova and No. 10 seeded Ekaterina Makarova.
History is on Serena's side. All five times the 33 year old has reached the semifinals in Melbourne she's won, but the next generation is knocking loudly at the door.