Novak Djokovic
The Wimbledon champion Djokovic will look to maintain his dominance in the Engish capital.Getty Images/Clive Brunskill

Stanislas Wawrinka meets Tomas Berdych before defending champion Novak Djokovic faces debutant Marin Cilic on day two of the ATP World Tour Finals in London.

Where to Watch

Stanislas Wawrinka v Tomas Berdych is live on BBC Two, Sky Sports HD3 and BBC Radio Five Live Sports Extra from 2pm.

Novak Djokovic v Marin Cilic is live on Sky Sports HD3 and BBC Radio Five Live Sports Extra from 8pm.

Preview

Group A takes centre stage on day two at the O2 Arena and kicks off with Australian Open champion Stanislas Wawrinka taking on Tomas Berdych in the afternoon session.

Wawrinka debuted at the season-ending tour finals last year and stormed into the semi-final with two round robin victories but will be attempting to go one better in 2014.

Berdych meanwhile is playing in his fifth straight ATP Finals tournament but has only emerged from the group phase on one occasion and having been drawn against three major champion faces another uphill task.

The Swiss right-hander has a 9-5 win record over Berdych and has prevailed in each of the last four meetings including at the Australian Open in January and at last year's ATP World Tour Finals.

In the evening session, the two-time defending champion Novak Djokovic begins his attempts to add a fourth title at the end of year championships against US Open champion Marin Cilic.

Djokovic stands three round robin wins away from securing the year-end world No.1 ranking and could take a mighty step towards that feat should he defeat Cilic, who is making his maiden appearance at the O2 Arena.

Cilic automatically qualified for the season-ending finals courtesy of his victory at Flushing Meadows but having never beaten Djokovic in 10 previous meetings between the pair the Croat's stay in London could be short-lived.

What they said:

Stanislas Wawrinka: "I'm really happy and I wouldn't change my year for anything. To win a Grand Slam and be No. 4 in the world, for me it's been a great year. Monte-Carlo was completely different. Winning an [ATP World Tour] Masters 1000 on a clay court and against Roger was something really special. That was part of the amazing memories of this year."

Tomas Berdych: "There are Grand Slam champions in my group, so it is not an easy one. Having Novak in the group, pretty much means one spot is already taken and we're going to fight for the other spot. I am going to focus on my first match and try to go for it."

Novak Djokovic: "It's the last tournament of the season. Only the best eight players in the world play here. It's a unique format, round robin, that we don't have on the Tour at all. It's the crowning achievement for all players here and they all want to finish in the best possible way. That's why every match that you play in the group is like playing in the semi-finals or final of a Grand Slam."

Marin Cilic: "It's a huge pleasure for me to be here in London. After a whole season [it's an honour] to be in the Top 8 to play this amazing event. In the past I was close to making it, but I have never experienced it. It's an amazing feeling so far."