Viktor Troicki lets an umpire have it after a tough loss on Day 4
The Big Four will be serving double duty in Rio.
"I think us, as a country, we have sort of turned the corner," American No. 1 said.
The World No. 1 crashes Dimitrov's presser, but the Bulgarian holds his ground.
Seeded players Radwanska and Kvitova could meet in Wimbledon quarterfinals.
The Serb's forehand gives new meaning to the term "take out the trash."
The 24th-seeded German talks about two leaders of the young guns charge.