Former World No.1 and reigning Australian Open Champion Caroline Wozniacki made her WTA Finals debut almost a decade ago and the Dane is making her sixth appearance at the Elite Event. “I think the players that I played against in 2009, a lot of them are not playing anymore,” she noted during the press conference on Saturday.

“I think it was Zvonareva, Dementieva. Serena is obviously playing and still playing very well.” “It's like half of the players, either don't play, are just coming back, are not playing at all and had kids and all that, or a lot has changed.

Some of them are still here ten years later.” Winning her maiden Grand Slam this year, she is also the defending WTA Finals Champion. “It's fun to see, and it's definitely different kind of tennis, as well.

I think we keep evolving. I think every year it gets tougher. It's just fun to be back here and think about how my career has lasted a long time,” she said. “I'm very happy. I think winning in China was a big step for me.

You know, I feel good and excited for here. It's obviously a tough challenge, but I'm looking forward to it.” Speaking about mingling with childhood friend Angelique Kerber, the Dane said, “We go out for dinners and have a drink every tournament basically.

And by ‘drink’ I mean like a coffee or tea or something every tournament. It's nice to be able to catch up and just talk. It’s great how the girls that you have known since we were maybe ten years old. It's cool this progress we have all made.” She ended by saying, “It’s different here.

It's kind of a celebration of everyone's season. Everyone is excited to be here and also to play this last tournament, give it a go and try their best and go on vacation after.” ALSO READ Andy Murray is the Big-4 player I am closest to, Novak Djokovic