Top seed Rafael Nadal of Spain displayed a dominating show at Shanghai Masters by wrapping up a second-round match against Swiss Stanislas Wawrinka 6-4, 6-4 on Wednesday.

Besides, Novak Djokovic, Roger Federer and Andy Murray also clinched easy victories.

Winning three Grand Slams and three ATP 1000 Masters, the 2010 version of Nadal was simply unbeatable.

Appearently, Wawrinka was not the right person to threaten the 24-year-old Spaniard's throne, for he had lost all of their previous six meetings.

Nadal, who dropped only eight matches this season, raised his winning record to 67 (out of a total 75 matches) after gaining Wednesday's triumph.

As the server of the first game of today's match, the Swiss made too many unforced errors to hold his serve. Nadal flashed an early break to establish a 2-0 lead. Neither player was able to break again in the rest part of the first set, which the left-handed world number one finished 6-4.

In the second set, Wawrinka struggled to resist another early break from Nadal, but he failed his attempt in the seventh game to allow his opponent a 4-3 lead. Nadal maintained his top form afterwards, and closed out the match 6-4.

Wawrinka produced 36 unforced errors throughout the match, while Nadal only made 12.

Nadal experienced a brief press conference, with merely three questions to answer.

"Wawrinka is a very good player and is very difficult to have a victory today in straight set," said Nadal, who had never lost a set to his Swiss opponent. "But it wasn't one of these very very difficult days."

Second-seeded Novak Djokovic of Serbia eased into the last 16 with a 6-3, 6-3 victory over Croatian Ivan Ljubicic.

It was the 23-year-old Serbian's seventh triumph out of the two's nine meetings.

As the second seed, Djokovic automatically advanced into the second round, while Ljubicic had just escaped from a 153-minute match against local favorite Zhang Ze the day before.

Exhausted Ljubicic struggled to find his rhythm at the beginning, finding himself 0-3 behind after three games. The veteran managed to hold serve in the fourth game, but his efforts were not enough to stop the opponent eight years his junior, from claiming the first set 6-3.

Ljubicic got a better start in the second set, but he ran into problems with his right arm afterwards. Djokovic broke twice to finish the match 6-3.

Having won his second title in Beijing two day's ago, Djokovic didn't feel any fatigue at the tournament.

"No fatigue. Actually it's a great start," said the world number two, who grabbed both his 2010 titles in Asia. "Beijing was one of the best tournaments I've had in the year. So definately I'm confident o the court."

Djokovic became the first top-four single to finish a match at Shanghai Masters.

"I'm playing later in doubles. That's why I have to play of the first matches," he said.

Talking about his opponent, who produced six aces throughout the match, Djokovic showed his respect.

"He is a big server. When he needed to, he served well."

At last year's Shanghai and Beijing event, the Serbian played eight matches in 11 days, which made him feel "exhausted".

Federer defeated John Isner of the United States 6-3, 6-4, while Murray stunned local wild card Bai Yan 6-2, 6-2.