Novak Djokovic won his third straight match at the ATP finals on Thursday, finishing group play undefeated for the fourth time in the past five years.
The second-ranked Serb, who still has a chance to finish the season as the No. 1-ranked player, beat David Goffin 6-1, 6-2 at the O2 Arena.
Goffin was making his debut at the season-ending tournament, filling in for the injured Gael Monfils against Djokovic.
The 11th-ranked Belgian didn’t get much chance against Djokovic, earning only one break point _ and that in the final game of the match. Djokovic, meanwhile, converted four of his six break points, two in each set.
Djokovic had already qualified for the semifinals. The second semifinal spot will be decided later Thursday when Milos Raonic faces Dominic Thiem.