The meeting ended with the score 3: 6, 6: 3, 6: 1 in favor of Khachanov. The match lasted 1 hour 46 minutes.
In the semifinal match, the Russian will play with the winner of the pair Dominic Tim (Australia) - Andy Murray (Great Britain).
Earlier it was reported that Novak Djokovic defeated Luke Puy and reached the semi-finals of the Asia-Pacific tournament in Tokyo.