Serbia’s Novak Djokovic reacts during his match againstLuxembourg’s Gilles Muller at the ATP World Tour Masters 1000 indoor tournament in Paris on Nov 2, 2016. [Photo/IC]

Top seed Djokovic, 29, claimed the encounter 6-3, 6-4 in 80 minutes to advance to the last 16 where he will play the 14th seed Grigor Dimitrov.

"I try to focus on playing match after match and putting quality and value into my game," he said. "And I know that if I do that, I can challenge anybody in the world on any surface and in any conditions. So I focus on my own quality and what I bring to the court."

Also on Wednesday, 5th seed Kei Nishikori of Japan beat Serbian Viktor Troicki 6-2, 7-5 to make through into the last 16, while Frenchman Gilles Simons and American John Isner upset seeded opponents to claim spots in the last 16 as well.