In New York, the world No.1 was disqualified after swiping at a ball in frustration which hit the throat of a female line judge standing behind him.

The incident happened on the showpiece Arthur Ashe Stadium, one of just two courts at the tournament which maintained the tradition of using on-court line judges.

On all the others, electronic line calling was used as part of plans to reduce the number of people on the Flushing Meadows site during the coronavirus pandemic.

There have been growing calls for a similar system to be introduced at Roland Garros which still relies of officials making rulings with the naked eye.

Speaking at the French Open, Djokovic said he believes it's time for a rethink.

"With all respect for the tradition and the culture we have in this sport, when it comes to people present on the court during a match, including line umpires, I really don't see a reason why every single tournament in this world, in this technological advanced era, would not have what we had during Cincinnati/New York tournament," he said.

"The technology is so advanced right now, there is absolutely no reason why you should keep line umpires on the court. Of course I understand technology is expensive, so it's an economical issue and a question mark. 

"But I feel like we are all moving towards that, and sooner or later there is no reason to keep line umpires. 

"Maybe you can tell me if there is any significant reason why we should keep other than tradition that we had and have in this sport. Then I would also probably then have less chances to do what I did in New York."

Top players such as US Open champion Dominic Thiem, Denis Shapovalov and Stefanos Tsitsipas have called for a rethink of officiating at Roland Garros this week.

Djokovic on Sunday (AEST) demolished Colombian lucky loser Daniel Galan to reach the Round of 16 in Paris for a record-equalling 11th successive year.

Djokovic swept past world No.153 Galan 6-0, 6-3, 6-2 with his most challenging moment coming when he helped ground staff lay more clay on the surface of Court Philippe Chatrier after rain had made it treacherous.

For the 2016 champion, who is chasing an 18th grand slam title, it was a 71st win in Paris.

Djokovic also took his 2020 record to 34 wins against just one loss – his New York brain-fade – as he continues his bid to become the first man in half a century to win all four grans slam titles twice.

Next up for a place in the quarter-finals is No.15 seed Karen Khachanov, from Russia, who beat Chile's Cristian Garin.