Roger Federer speaking Chinese. The Swiss spoke about his physical condition: "I think I felt better overall at the Laver Cup the first of the three years where I really felt sort of injury-free. I recovered well from my back stuff at the US Open this year, but it took me about 10 days, much longer than I thought.
But then for the Laver Cup I was 100% again, whereas in previous Laver Cups I always had a stiff back. Sometimes the year-end can create that as we're heading into fall and the weather gets colder. I'm not sure if that has an effect with it."