Wawrinka qualified for the third straight time in the ATP World Tour Finals, and is the fourth seed at the event. He was put in the Ilie Năstase Group. At the first rubber, he lost against Nadal in straights only winning five games. At the second rubber, he won against Ferrer in straights. At the third rubber, he faced Andy Murray for the first time since their last meeting at the 2013 US Open quarterfinals, where the winner of this rubber would be guaranteed a place in the semifinal after placing second in the group, facing Federer. Wawrinka won the match in straight sets, advancing him to his third straight semifinal at the year-end championships. He rematched Federer in the semifinal, this time losing in straight sets.