The Novak Djokovic juggernaut continued to roll at the French Open in pursuit of his third crown at Roland Garros, 23rd Grand Slam title and World No.1 ranking as the Serbian weathered a tough challenge from Karen Khachanov to reach the men's singles semifinals here on Tuesday.

In a well-contested quarterfinal, the third seed Djokovic braved an early barrage from Khachanov before sealing an ultimately comfortable 4-6, 7-6(0), 6-2, 6-victory at the clay-court major.