Serbia and Canada are level at 1-1 as Janko Tipsarevic failed to follow up Novak Djokovic's opening rout of Vasek Pospisil.
CAS says Troicki has not asked for his 18-month ban to be frozen during the procedure, which could have cleared him to continue playing in events such as the U.S. Open.
Radwanska, who makes no secret of her strong Catholic faith, was photographed in the "Body Issue" of ESPN Magazine in profile without a stitch, sitting in a lawn chair by a pool filled with tennis balls.
Verdasco, who pushed eventual Wimbledon champion Andy Murray to five sets in the quarterfinals, had 12 aces in eliminating Sweden's Andreas Vinciguerra 6-4, 7-6 (3). Vinciguerra was the last Swede remaining in the clay-court ATP tournament in Bastad.
Radwanska will face China's Li Na for a place in the semi-finals.
The Polish star has been carrying the injury throughout the claycourt season where she lost in the second round in Madrid as well as Rome.
World No. 1 Novak Djokovic got 2010 champions Serbia off to a fast start against the United States, with a 7-6 (7/5), 6-2, 7-5 victory over John Isner.
Kirilenko, who last year lost to Ana Ivanovic in the final, will take on Sorana Cirstea of Romania on Saturday.
The Russian also missed the U.S. Open this year because of a viral illness and the French Open with the same shoulder injury.
Lucie Safarova and Petra Kvitova breezed past their Serbian rivals to give holders Czech Republic a 2-0 lead in the Fed Cup final here on Saturday.
Julien Benneteau was among three French winners in the opening round of the Paris Masters on Monday, downing Victor Troicki of Serbia 6-4, 7-5 to set up a match against countryman Jo-Wilfried Tsonga.
Bulgaria's Tsvetana Pironkova pulled off a surprise win against a sick Varvara Lepchenko of the US here in the Kremlin Cup on Tuesday.
Gael Monfils made back-to-back quarterfinals by ousting sixth-seeded Victor Troicki of Serbia 7-5 7-5 in the second round of the Thailand Open on Thursday.
Last year's runner-up Vera Zvonareva of Russia and Flavia Pennetta of Italy pulled out of the Pan Pacific Open tennis tournament that gets under way this weekend, organisers said on Wednesday.
More than four years after her French Open title, Ana Ivanovic is finally back in a Grand Slam quarterfinal.
Mahesh Bhupathi and Rohan Bopanna, who took on the All India Tennis Association to compete as a team in the London Olympics, have been seeded seventh in the men's doubles event of the sporting spectacle that will unfold with an opening ceremony here on Friday.
Jelena Jankovic overcame problems with her serve to claim a 2-6, 6-4, 6-4 win over Melinda Czink in the second round of the Mercury Insurance Open on Thursday.
Good thing Wimbledon schedules its middle Sunday as a day off. This year, that gave everyone a chance to catch their breath after an eventful Week 1. Really, when action resumes Monday with all 16 men's and women's fourth-round matches, what could Week 2 possibly have in store to equal what the first six days offered?