Novak Djokovic expects to have to work harder than he has in his opening two matches to win the ATP World Tour Finals for the fourth time in his career.
The Serb has been in devastating form so far in London, demolishing Marin Cilic 6-1 6-1 in his opening match before seeing off Stanislas Wawrinka 6-3 6-0 on Wednesday to move within one victory of ensuring that he ends the season top of the world rankings.
However, Djokovic expects tougher tests to come at the O2 Arena, saying after a ruthless display of power hitting against Wawrinka: “I know that I’ve been playing very well this week and hope that I can continue this way.
“Of course, since it’s the tournament of the best eight players in the world, people expect to see a little bit more excitement and longer matches. So far we didn’t have any three-setters.
“I think that’s going to change as the tournament progresses.”
Next up for Djokovic is a meeting with Tomas Berdych, who responded to being thrashed 6-1 6-1 by Wawrinka in his opener by defeating Cilic 6-3 6-1 to keep alive his hopes of reaching the semi-finals.
Djokovic holds a 16-2 winning record against Berdych and has won all of their three previous meetings at the ATP World Tour Finals, triumphing in 2010, 2011 and 2012 for the loss of just a single set.
Reigning Wimbledon champion Djokovic, chasing a third consecutive ATP World Tour Finals success, is 1.44 to be crowned champion again in London, with The Field available at 2.81.