Roger Federer breezes past Leonardo Mayer and into second round

On his 64th consecutive Grand Slam appearance, the Swiss played a superb match on his serve, firing 12 aces and winning 84% of the points played on his first serve.

Roger only faced and saved one break point throughout the entire match and closed with 29 winners and just 13 unforced errors.

The match lasted 77 minutes, with the second set alone taking 30 minutes, recorded as the longest.

Considering how it was probably the only moment Roger was challenged, the Swiss decided to close the set on a flying winning volley/smash.

A first-set bagel was avoided as Mayer briefly displayed his repertoire, winning a rally then firing twice past his foe. It took until the third opportunity for Federer to break, doing so with a whipped cross-court winner.

A half-volley broke Mayer at the next chance and an acrobatic smash from Federer sealed set point in the most stylish way.

In the final set Federer broke at the second and third times of asking as Mayer visibly lost the will to continue chasing balls that flew past him. The Argentine held a late serve but Federer ended his hopes moments later in typically smooth fashion.

"I feel good now," said Federer. "I actually wasn't so confident yesterday and today. I just felt like maybe (this)could be one of those matches I just couldn't see coming.

"Thankfully I took this match extremely serious," said the 34-year-old Swiss, who had fought off five match points in beating Mayer last year in Shanghai.

Elsewhere, Tomas Berdych also won in straight sets by beating Bjorn Fratangelo 6-3 6-2 6-4. John Isner also progressed with a 6-2 6-3 6-4 win against Malek Jaziri.

Australian Lleyton Hewitt, the 2001 U.S. Open winner, advanced 6-0 7-6(2) 1-0 when Aleksandr Nedovyseov of Kazakhstan retired.

Misfortune favoured the French and went the other way for the Aussies when 12th seed Richard Gasquet advanced 4-6 6-1 4-6 6-3 2-0 when Thanasi Kokkinakis retired.

Other players were sorely tested on the court.

Three players in the bottom half of the men's draw had to go the distance under the sun, including French 11th seed Gilles Simon, who looked to have iced victory after taking a 6-2 6-4 3-0 lead over American Donald Young.

But the Frenchman stumbled, and the 26-year-old American, once hailed as the next great U.S. player, saw an opportunity and turned the match upside down for a 2-6 4-6 6-4 6-4 6-4 win.

"I really had it on my racquet," said Simon. "I was not able to do anything on the tennis court. I think Donald realised it and then played what he had to play to take me down in five sets. It's a terrible result for me today."

In another wrenching defeat for France, Paul-Henri Mathieu fell to Japan's Yoshihito Nishioka in five sets.

The 128th-ranked Yoshihito Nishioka, who saw fourth-seeded compatriot and 2014 finalist Kei Nishikori drummed out in five sets on Monday, booked himself into the second round with a 6-4 2-6 6-7(7) 6-1 6-2 victory.

Dutchman Robin Haase also made a Houdini-like escape against Germany's Dustin Brown to register a 4-6 4-6 6-3 7-5 6-4 victory.

20-Dominic Thiem (Austria) beat Daniel Gimeno-Traver (Spain) 7-5 6-3 7-5

29-Philipp Kohlschreiber (Germany) beat Alexander Zverev (Germany) 6-7(0) 6-2 6-0 2-6 6-4

Lleyton Hewitt (Australia) beat Aleksandr Nedovyesov (Kazakhstan) 6-0 7-6(2) 1-0 (Nedovyesov retired)

2-Roger Federer (Switzerland) beat Leonardo Mayer (Argentina) 6-1 6-2 6-2

12-Richard Gasquet (France) beat Thanasi Kokkinakis (Australia) 4-6 6-1 4-6 6-3 2-0 (Kokkinakis retired)

Mikhail Youzhny (Russia) beat John-Patrick Smith (Australia) 6-1 3-6 7-5 7-6(4)

Aljaz Bedene (Britain) beat Ernests Gulbis (Latvia) 3-6 6-4 3-0 (Gulbis retired)

30-Thomaz Bellucci (Brazil) beat James Ward (Britain) 6-1 7-5 6-3

Austin Krajicek (U.S.) beat Santiago Giraldo (Colombia) 3-6 7-6(6) 7-6(6) 7-6(1)

Donald Young (U.S.) beat 11-Gilles Simon (France) 2-6 4-6 6-4 6-4 6-4

Yoshihito Nishioka (Japan) beat Paul-Henri Mathieu (France) 6-4 2-6 6-7(7) 6-1 6-2

6-Tomas Berdych (Czech Republic) beat Bjorn Fratangelo (U.S.) 6-3 6-2 6-4

13-John Isner (U.S.) beat Malek Jaziri (Tunisia) 6-2 6-3 6-4

Robin Haase (Netherlands) beat Dustin Brown (Germany) 4-6 4-6 6-3 7-5 6-4

21-Ivo Karlovic (Croatia) beat Federico Delbonis (Argentina) 6-3 7-5 7-5

Jiri Vesely (Czech Republic) beat Paolo Lorenzi (Italy) 6-4 6-4 6-4

Jurgen Melzer (Austria) beat Denis Kudla (U.S.) 6-3 7-5 6-1