Novak Djokovic extended his winning streak to 13 straight matches with a swift 6-2, 6-1 win over Martin Klizan in the second round of the Shanghai Masters on Wednesday.
Rafael Nadal also advanced to the third round, although in far more difficult fashion.
The eighth-seeded Spanish player escaped with a 7-5, 6-7 , 7-6 win over Ivo Karlovic of Croatia in two hours, 43 minutes.
Djokovic is coming off his sixth China Open title last week, where he only lost 18 games in the entire tournament - the most dominant title run of his career.
He picked up right where he left off in Shanghai, fending off the only break point he faced against Klizan to win in 63 minutes.
Djokovic is aiming for his ninth title of the year and his third at the Shanghai Masters.
"Considering the fact that I've won so many matches this year and tournaments, probably the best season of my life definitely, anywhere I go I'm confident," he said.