Stat of the day: Vera Zvonareva defeated Caroline Wozniacki in three gruelling sets in the last match of day two action in Istanbul. The primary reason? The Russian’s 49 winners to the Dane’s 13. Note to Caro: relying solely on superb defensive skills just won’t cut it at the highest level. Yet while that may be, Wozniacki has secured the year-end No.1 ranking for the second straight year thanks to Maria Sharapova‘s withdrawal from the event due to a persistent ankle injury.

Typical WTA moment: Masha’s withdrawal continues the unfortunate theme of WTA events lacking in star power. The past four winners of the Championships since 2006 — Kim Clijsters, Serena Williams, Venus Williams and Justine Henin — all failed to start, and with 2004 winner Sharapova now gone as well, the event is missing the five most successful players of the past decade. Could you imagine the equivalent scenario occurring at the ATP World Tour Finals? If Federer retired before it began, Nadal, Djokovic and Murray didn’t enter because of injury, and then Del Potro withdrew during the week, the tournament would be decimated.

Intriguing interviews: Caro added some spice to the event by telling reporters that she thinks some players grunt on purpose. “They don’t do it in practice and then they come into the match and they grunt. I think they [officials] could definitely cut it,” she said. Does this mean she thinks the same of her friend Victoria Azarenka, also in the draw and who’s one of the loudest shriekers out there? That potential match-up may have gotten a whole lot more interesting | Speaking of complaints: Agniezska Radwanska aired her grievances about the court at the Sinan Erdem Dome. “It’s pretty slow. It’s weird bounces, and surface very sticky so it’s hard to run, as well,” she said. But it’s not all doom and gloom in Turkey — Caro and Masha shared their enthusiasm about the potential combining of the ATP and WTA year-end events. “It would definitely be nice to see. I think that would be a lot more fun for the fans to see the men and women together,” Sharapova said. The ATP will have to streamline their calendar first — its World Tour Finals are still almost a month away.

Photo of day: We’ve always loved Vika’s intense post-match winning celebrations. Today’s win over Sam Stosur was no different.

My vocal chords are just fine, Caro. Thanks for asking… (AP photo)

Thought for today/tomorrow: Who will come up trumps in the match between Azarenka and Li Na? Given that both women own unblemished records in the tournament so far with one straight-set win apiece, the winner will break the deadlock in the White Group, vault to the top of the group standings and put themselves in prime position for a semifinal berth.

Matt Trollope began covering tennis in 2008, a natural extension of his childhood obsession for the game that included hitting for countless hours against his bedroom wall and self-producing and editing a fictitious tennis magazine. Based in Melbourne, he has covered four Australian Opens and one Wimbledon championship, and his tennis writing has featured in Australian Tennis Magazine, the Australian Open Official Program, and Alpha Magazine.