"I'm pretty comfortable with it - it's good to have shot clock in the tournaments prior to the US Open".
The ninth-seeded Serb, competing in his first tournament since his Wimbledon triumph last month, won a dominant 83 percent of his first service points and wrapped up the day's opening match minutes before the first of several rain delays.
Djokovic, the victor of 30 career Masters titles. will next face either seventh seed Dominic Thiem, who has yet to step on to a hard court this summer with the US Open just over a fortnight away, or rising Greek youngster Stefanos Tsitsipas.
Greek teen Stefanos Tsitsipas upset Wimbledon champion Novak Djokovic 6-3, 6-7 (5), 6-3 on Friday (NZ time) in the Rogers Cup.
Djokovic faded late against his flashy opponent, who played with poise and power on a warm, breezy afternoon at Aviva Centre.
Tsitsipas called his knockout of Djokovic, "the best match of my career".
"I feel physically pretty well". "I just played not that great".
"He played very well and deserved to win without a doubt", Djokovic said. "It's true that with my serve in the second set I had some troubles but my return was working well.it was more about the mistakes from the baseline in my opinion".
Wake Forest coach sends condolences to dead tourist's family
Szabo's brother said he thought Szabo may have mistaken an SUV for a cab, according to the New York Daily News . The man exited a white SUV and punched Szabo, leaving him bleeding on the ground, police said.
I had my chances to come back in the third set when I dropped my serve at 15-40.
He'll next face second-seeded defending champion Alexander Zverev of Germany, a 6-3, 6-2 victor over Russia's Daniil Medvedev. "So just all in all, it wasn't that great of a match".
Bulgarian fifth seed Grigor Dimitrov required nearly two and a half hours to subdue Frances Tiafoe of the United States 7-6 (7/1), 3-6, 7-6 (7/4).
"He just played better in the decisive moments", Novak Djokovic said.
Sixth seed Marin Cilic continued his quiet progress, beating Argentine 11th seed Diego Schwartzman 6-3, 6-2.
Also, Karen Khachanov of Russian Federation beat 12th-seeded Pablo Carreno Busta of Spain 6-4, 7-6 (3); Ilya Ivashka of Belarus topped American Ryan Harrison 7-6 (5), 6-4; and American Frances Tiafoe edged Canada's Milos Raonic 7-6 (4), 4-6, 6-1.
Fourth-seeded Kevin Anderson of South Africa and fifth-seeded Grigor Dimitrov of Bulgaria set up another quarterfinal. Khachanov beat eighth-seeded John Isner of the United States 7-6 (5), 7-6 (1), and Haase topped Canadian Denis Shapovalov 7-5, 6-2.