Emperor strikes back
As the match ticked over two hours, the third seed was determined not to let Khachanov dictate on his terms any longer.
Still Djokovic had not summoned a break point but as the pair headed to a tiebreak, he flicked the switch, raised the tempo and strung together a flawless seven points on the trot to level the match.
It proved a telling blow to Khachanov’s hopes and he was broken for the first time at the beginning of the third.
Barring a lapse in which he surrendered the break back for 4-all in the fourth set, Djokovic was never ceded again.
Victory at the three-hour, 38-minute marked lifted his record to 9-1 against his foe and was his 90th match win at Roland-Garros – more than at any other Slam.
“Against players like Karen – he has a big serve, maybe doesn’t move as well – I tried to expose him, make it unpredictable for him,” Djokovic said. “It worked in the end. It was a big fight – it always is with Karen. I have a lot of respect for him. He’s a great fighter, a great player.”