Host choses indoor hard-court for November 11-13th final vs. USA.
The two-time Wimbledon champion hopes to be fine for next week's championships.
"If (Serena) played the men's circuit she'd be like 700 in the world," Hall of Famer says.
The 20-year-old German hopes lighting strikes twice in Halle, but he's not guaranteeing it.
In new memoir, John McEnroe talks about his stormy relationship with the late artist Andy Warhol.
"I couldn't have imagined to have a better comeback than I am having now,” two-time Wimbledon champion said.
Robin Haase finished off this point with an unconventional trick shot.
