Regardless of the results of this week's year-end championships in Istanbul, there is no true world No. 1 in tennis this year.
The early losses of No. 3 Maria Sharapova, No. 5 Petra Kvitova, No. 6 Li Na and No. 8 Marion Bartoli, above, was one of the themes of week one.
The reigning French Open and Wimbledon champions were both felled in the first round. What does that say about the state of women's tennis?