Basel, Switzerland :Novak Djokovic recorded his first 6-0, 6-0 win at an elite level event on Thursday, shutting out Jan Hernych at the Swiss Indoors.
The third-ranked Serb took just 53 minutes to beat his 59th-ranked Czech opponent in their second round match.
"To win against somebody (with a) double bagel, an opponent has to play really, really bad," Djokovic said.
He routed Andy Murray in 63 minutes to reach the final of the Miami Masters Series in March 2007, and dispatched David Nalbandian in 48 minutes on grass at Queen's Club, London, last year.
The 30-year-old Henrych did create three break points in the first set, but Djokovic saved them all and then won all eight points on Henrych's second-serve in the opening set.
"It's funny at the end with the crowd wanting him to win a game. It's easy to understand that," said Djokovic, who offered no respite and converted his first match point. "We're professionals and he's my rival on the court."
Djokovic reached his 18th quarterfinal of the year. His only one failure to reach the last eight since January came with a third-round exit at the French Open, where he lost in straight sets to Germany's Philipp Kohlschreiber.
Djokovic will next play sixth-seeded Stanislas Wawrinka of Switzerland or Finland's Jarkko Nieminen, who played later on Thursday.
In other second-round action, Evgeny Korolev of Russia beat France's Jeremy Chardy 6-4, 7-6 (1) and Marco Chiudinelli edged Michael Lammer 2-6, 6-3, 6-3 in an all-Swiss match.
Korolev, a 58th-ranked qualifier, will play top seed Roger Federer in Friday's quarterfinals and Chiudinelli will meet John Isner of the United States or France's Richard Gasquet.