Will Barbora Krejcikova continue to be a double threat and who will pick up the torch for the U.S. men's doubles?

Krejcikova/Siniakova, Shibahara/Aoyama, and Ram/Salisbury are just a few top seeds still alive.

The top seeds come into the tournament with question marks. Can they fight through a field with plenty of major champions in the mix?

Veterans, newcomers, veteran newcomers; the prestigious year-end event has it all and it's full of possibilities because of it.

In addition at the Western & Southern Open, Marcel Granollers and Horacio Zeballos made a strong case ahead of the US Open with their title run on the 1000-level stage.