Istanbul, Turkey (Sports Network) - Defending champion Petra Kvitova withdrew
from the WTA Championships on Wednesday due to a viral illness.
Kvitova went undefeated in last year's tournament, but dropped a 6-3, 6-2
decision to Agnieszka Radwanska in her opening round-robin match on Tuesday.
"Of course I'm sad to withdraw from the WTA Championships. It's a great
tournament and it was an honor to be here," Kvitova said.
Samantha Stosur will replace Kvitova for the remainder of the season-ending
tournament, which consists of the top eight players in the world.
The Sports Network