Novak Djokovic of Serbia in action during in his men's singles match against David Goffin of Belgium on day five of the ATP World Tour Finals at O2 Arena on November 17, 2016 in London, England. [Photo/VCG]

The Serbian dominated the Belgian Goffin 6-1, 6-2 in 70 minutes to clinch his fifth consecutive semifinal appearance in London.

The four-time defending champion now awaits the second-place finisher in Group John McEnroe, which could be Andy Murray, Stan Wawrinka or Kei Nishikori.

Wawrinka takes on Murray on Friday afternoon and Nishikori meets Marin Cilic during Friday's evening session.