MELBOURNE, Australia -- The "Rafa Slam" is still alive after Rafael Nadal beat Marin Cilic 6-2, 6-4, 6-3 at the Australian Open on Monday to maintain his chance of owning all four Grand Slam trophies at once.
That's a feat which hasn't been achieved since Rod Laver won four majors in 1969.
Playing on Melbourne Park's center court that is named after the Australian legend, Nadal advanced to a quarterfinal against Spain's David Ferrer as he attempts to add to the Grand Slam titles he won last year at the French Open, Wimbledon and the U.S. Open.
Nadal hasn't dropped a set through four rounds at Melbourne Park, despite carrying the effects of a virus he picked up two weeks ago in Qatar.
"Before the match I was a little bit nervous," Nadal said. "I know how aggressive he can play. I think I played my best match this year here at the Australian Open."
At Nadal's previous match, he sweated profusely in a night match Saturday, saying he was still feeling the effects of the virus. On Monday, thanks to cooler weather in Melbourne and his slow recovery, the problem had abated.
"I'm not sweating that much tonight," Nadal said. "The two other days I was sweating like crazy and I felt very tired when I played the match. Today was the first day I felt perfect physically."
A capacity crowd of 15,000 that included American country music star Kenny Rogers -- sitting next to seven-time Grand Slam singles winner Evonne Goolagong Cawley of Australia -- saw Nadal struggle at times on his serve.
The fourth game went to deuce four times, but Nadal finally prevailed on his service with a forehand smash at the net, followed shortly by his patented "Vamos" as he walked to the back of the court.
In the next game, he set up one of four break points with an amazing get of a Cilic drop shot at the net, sending it across the court to the side line for a winner. He converted for 4-1 and, after serving a double fault on his first set point, Nadal took the opening set when Cilic netted a backhand.
Nadal went ahead 4-3 on a service break in the second set, then clinched it when Cilic, who beat American John Isner in five tough sets on Saturday, hit a forehand long. He advanced when Cilic double-faulted on match point.
"It's tough to say. From this match, I didn't push him too much," Cilic said when asked to gauge Nadal's fitness and form. "You couldn't see how much does he have in the tank and, I mean, especially as I didn't play great.
"But definitely he's got good confidence."
Earlier, fifth-seeded Andy Murray also advanced to the quarterfinals, setting up a possible semifinal with Nadal.
"I don't want to get carried away," Murray said after his 6-3, 6-1, 6-1 win over Jurgen Melzer of Austria. "I've never won one of these things before."
The win put Murray closer to a second straight appearance in the final at Melbourne Park, where he lost to Roger Federer last year after beating Nadal in the quarterfinals.
He also came close to ending a woeful British streak -- no male winner of a Grand Slam since Fred Perry in 1936 -- at the 2008 U.S. Open, where he lost final to Federer.
Before Murray gets a potential crack at Nadal, he'll face an unexpected quarterfinal rival after 22-year-old Ukrainian Alexandr Dolgopolov had an upset 1-6, 6-3, 6-1, 4-6, 6-2 win over fourth-seeded Robin Soderling, ending the French Open finalist's eight-match winning streak.
"He's got a very unorthodox game, very different to most of the guys on the tour," Murray said of Dolgopolov. "He has a game that can make you play strange shots or not play that well."
Dolgopolov said his father, Oleksandar, worked as a coach for the likes of Andrei Medvedev, so he sometimes hit with the players when they were practicing and the family was on tour.
"For sure I had some good times. I was a bit maybe annoying for some players to play with me," he said. "It was nice to start a tennis career like that."
Ferrer set up a quarterfinal match against fellow Spaniard Nadal with his 4-6, 6-2, 6-3, 6-4 win over 20-year-old Canadian qualifier Milos Raonic, who'd upset No. 10 Mikhail Youzhny in the third round.
Soderling hadn't dropped a set during his surge that started with his run to the title at the Brisbane tuneup event. He dominated the opening set but couldn't keep it up against Dolgopolov, who is making his fourth appearance in a major and was coming off a five-set win over former Australian Open finalist Jo-Wilfried Tsonga.
Dolgopolov's cross-court backhand to bring up his first match point was typical of the 50 winners he hit against a stunned Soderling, the highest of the seeded players knocked out of the men's draw.
Soderling saved three match points, but his run came to an end with another unforced error, his 51st.
Murray has lost just 22 games in four matches.
"I'm not expecting to go through the tournament winning matches like that, with that scoreline," Murray said. "I'm ready for that mentally when it does get tough."