Knocking off his third straight Top 10 opponent was no shock to teenager.
Wimbledon champion backs proposed Davis Cup changes.
One element will empower world No. 1 for US Open Series.
World No. 3 on coping with pressure.
The Swiss didn't get the win against Rafael Nadal but his loss in Toronto may have been a big step in his comeback.
US Open champion keeps calm after squandering lead.
Former Wimbledon doubles champion also fined $10,000 for violating anti-corruption code.
