The three men to beat Novak Djokovic since Wimbledon will be major forces.
The Swiss says he got more than he bargained for in his banner 2018.
The German said he was rattled. Federer says he shouldn't be.
Alexander Zverev knocked John Isner out of London and can sustain his roll says the American.
Dominic Thiem says Stefanos Tsitsipas won't be waiting to make a major mark.
The French duo qualifed for the last four in London for the first time.
Roger Federer has simple message for players criticizing ATP calendar.
