NEW YORK -- If you haven't been paying attention for some time, the women's semifinals at the US Open might seem like it's Serena Williams' to lose. After all, among the other semifinalists, only Madison Keys has been in even one Grand Slam final.
But this US Open represents new and still uncharted territory for Williams, and nobody -- least of all Serena -- will say she's back until ... she's back. Meaning until she wins another major title.
Here's how the semis stack up:
No. 17 Serena Williams versus No.