German a long way off winning, says Pat.
Fans turn up in their numbers for Federer-Zverev clash.
Things are changing, says youngster.
Federer knows they are coming...
The young guys have put their hands up at the ATP Finals.
Zverev keeps his hopes of defending his title alive.
A fuss over nothing.
"Empty water bottle maybe?"
"He has, in a way, inspired me to step it up," says Tsitsipas.
'I can beat all of big three,' says German.