Rafael Nadal's hopes of going one better than last year and winning the Australian Open are still alive, following his four-set victory over Diego Scwartzman.
Nadal beat the Argentine 6-3 6-7 6-3 6-3 to set up a quarter-final clash with Marin Cilic, stirred on by the disappointment of losing in the final to Roger Federer 12 months ago.
And having dropped just one set in his four matches so far, the Spaniard will certainly fancy his chances of winning the title for a second time, though his first was way back in 2009.
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Nadal won both the French and US Open last year to reclaim the world number one spot, while setting a record for 10 tournament wins at the former.
However, a revitalised Novak Djokovic will almost certainly be standing in his way in Melbourne, with the Serbian missing the US Open due to an elbow injury.
But Nadal will believe that he is a match for anyone, especially on current form.
Though he made the headlines for an entirely different, and quite astonishing reason against Damir Dhumzur in the round of 32.
The Spaniard was given a warning for a time violation before the match had even begun.
Umpire Carlos Bernardes decided he took too long between the warm-up and the start of the match, and subsequently took the first step towards penalising Nadal.
In an interview with Marca, per Tennis World, Bernardes revealed exactly why he had to take action against the 16-time Grand Slam winner, using the '1-5-1' rule.
"These three numbers are there because the 1 is the minute that players have to leave the bags," he started.
"The 5 are the warm-up minutes. And the other 1 are the 60 seconds that players have between the end of warm-up and the beginning of the match.
"It's all calculated by an on-court clock, it's not a personal criteria."
If a player continues to make time violations after the first warning, they can end up forfeiting their first serve on that play, as well as additional penalties including losing the point.
It's well-known in tennis that Nadal does take a long time to serve, and tends to push the time-limit beyond its boundary.
He has had several furious rows on the court with umpires before, the majority of which have ironically been with Bernardes, who regularly warns him about time violations.
In 2015, Nadal was so angry he actually demanded that the umpire stop officiating his matches, which got a lot of negative reaction from people within the sport, who believed Nadal was trying to influence results.
"I consider him [Bernardes] a great umpire and a good person, but I think when you have some troubles with the same umpire, sometimes it’s easy to stay for a while away, no?" he said at the time.
The Spaniard also went ballistic at Bernardes in a match against Tomas Berdych in 2010, which you can see in the video below.
I think it's safe to say that the two don't appear to see eye-to-eye very often.
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