But Serbia's Djokovic, who first held all four when he won his maiden Roland Garros title in 2016, is hunting him down after adding the Australian Open trophy earlier this year to his 2018 Wimbledon and US Open titles. Paire, the world number 38 who was trying to make the quarter-final of a Slam for the first time, was eventually undone by 15 double faults and 79 unforced errors. "I reached the quarter-finals and played as close to my best tennis on clay as I think I can at the moment".
This is what life looks like if you are as famous as Roger Federer. I think it's the other way around, as well.
He raced through the second only to find himself on the back foot again in the third and fourth as Lajovic forced a decider with temperatures flirting with 30 degrees Celsius - a contrast with the chilly weather in the first week of the tournament.
Tsitsipas is also through to the fourth round but it has not been easy for the 20-year-old Greek either.
After the game was paused last night, the number seven seed maintained his focus to triumph 6-2, 6-7, 6-2, 6-7, 7-5, and set up a last eight meeting with Spain's 11-time French Open victor Rafael Nadal.
Next for the sixth seed is a tasty-looking encounter with 2015 champion Stan Wawrinka, who finished off his own delayed clash with Grigor Dimitrov, coming from 6-2 down to win the third-set tie-break and the match 7-6 (5) 7-6 (4) 7-6 (8). I am just so happy.
Djokovic looked in impeccable form throughout the fourth round match which was played on Court Philippe-Chatrier. Hopefully I can continue this run.
"I think that's always the case".
Thiem will be playing in his fourth successive quarter-final in Paris where he will face either 10th-seeded Russian Karen Khachanov or two-time semi-finalist Juan Martin del Potro.