Novak Djokovic breezed into the semi-finals of the Dubai Duty Free Tennis Championships defeating Russian Khachanov 6-2, 6-2 in 67 minutes.
He will next face third-seeded Frenchman Gael Monfils.
Monfils also had an easy route into the semi-finals by defeating Richard Gasquet 6-3, 6-3 in an all-French clash.
Greece's Stefanos Tsitsipas had a somewhat harder battle to oust Germany's Jan-Lennard Struff in three sets 4-6, 6-4, 6-4.
The last quarter-final saw Britain's Dan Evans send Russian Andrey Rublev packing in two sets 6-2, 7-6.
Today's semi-finals start at 5pm with Evans taking on Tsitsipas and at 7pm Djokovic faces Monfils at the Aviation Club.


England beat New Zealand to keep Pakistan's T20 World Cup hopes alive
Medvedev to face Griekspoor in bid for second Dubai title
Real Madrid face Man City again in Champions League knockouts
India defeat Zimbabwe to revive T20 World Cup hopes
Auger-Aliassime sets Medvedev semifinal in Dubai