Rafael Nadal secured a record-equalling 46th clay-court title by beating Juan Monaco in the final of the Argentina Open presentado por Buenos Aires Ciudad.
Nadal won 6-4 6-1 in a little under an hour and a half to draw level with Guillermo Vilas for the number of titles won on clay.
An out-of-sorts Andy Murray lost in straight sets to Croatian teenager Borna Coric to crash out of the Dubai Duty Free Tennis Championships on Thursday.
Murray thrashed Coric in a Davis Cup singles tie in September 2013 in their only other previous meeting, but was second best throughout Thursday's quarter-final encounter as the 18-year-old Coric won 6-1 6-3 in one hour and 19 minutes.
Coric's reward for claiming the world number three's scalp is a semi-final match against Roger Federer, providing the Swiss world number two can successfully overcome Richard Gasquet later.
Andy Murray is now ranked third in the world after reaching the Australian Open final.
The Scot, who lost to Novak Djokovic in Melbourne, overtakes Spaniard Rafa Nadal.
Wimbledon champion Andy Murray will wed fiancee Kim Sears at the luxury hotel he owns in Scotland, according to reports.
The couple are said to be arranging a private service for April 11 at the five-star Cromlix House Hotel. The star bought the hotel in 2013.
Andy Murray blamed himself after suffering more Melbourne misery at the hands of Novak Djokovic on Sunday, losing the pair's third Australian Open final with a dramatic late collapse.
After the first two sets were split in two hours and 32 minutes, Murray looked to be in command against an apparently ailing Djokovic when he broke for a 2-0 lead in the third.
However, from then on the 27-year-old Scot won just one of the next 13 games as a rejuvenated Djokovic raised his level to secure a fifth Australian Open and eighth grand slam title with a 7-6 (7/5) 6-7 (4/7) 6-3 6-0 win in three hours and 39 minutes.
The third set was frustrating because I got a bit distracted when he fell on the ground after a couple of shots. It appeared that he was cramping and then I let that distract me a little bit.
That's what I'm most disappointed about, not so much the fourth set because I think, especially at the end of it, he was just going for everything and it was going in.
Former Wimbledon champion Pat Cash accused Andy Murray of collapsing in the latter stages of his Australian Open final defeat to Novak Djokovic and believes he needs to learn from his mistakes.
After the first two sets were split in two hours and 32 minutes, Murray looked to be in command against an ailing Djokovic when he broke for a 2-0 lead in the third.
However, from then on the 27-year-old Scot won just one of the next 13 games as a rejuvenated Djokovic raised his game to secure a fifth Australian Open and eighth grand slam title with a 7-6 (7/5) 6-7 (4/7) 6-3 6-0 win in three hours and 39 minutes.
Things just started snowballing for Murray once he lost that concentration when everything was going his way
He hasn't put up a great fight, he hasn't. He absolutely collapsed. Sorry but you don't put a rose tint on this. He melted down, he's been disappointing and the bottom line is, the situation got too much.
The endurance and performance of tennis players caused former Premier League footballers Robbie Savage and Michael Owen to argue on Twitter today.
The pair clashed during Sunday's Australian Open final which Novak Djokovic won over Andy Murray in four sets.
Savage started things off, saying: "When you watch these 2 play tennis it amazes me how modern day footballers complain of tiredness embarresing (sic) really!"
Former England striker Owen responded with: "Not having that. Ridiculous shout," and added in "You're (sic) accusation was towards footballers and they are the people I'm defending against such drivel."
The two continued to debate, but Owen tried to have the final word by writing: "Studies show only 17.5% of match time in tennis is spent actually playing. 5 hour match equates to 52 mins playing time."
Novak Djokovic has secured his fifth Australian Open title with a four set 7-6 (7-5), 6-7 (4-7), 6-3, 6-0 victory over Andy MurrayRead the full story ›
Novak Djokovic has taken control of the Australian Open final by racing into a 3-0 lead in the fourth set with a double break.
The world number one aleady leads Andy Murray 2-1 in sets and seems poised to collect his fifth title at Melbourne Park.
Novak Djokovic leads Andy Murray 2-1 in sets at the Australian Open final after winning the third 6-3.
Murray appeared to be in the ascendancy after breaking in the opening game of the set and holding immediately afterwards, but Djokovic moved through the gears to claim the next three games and race into a 3-2 lead.
He forced three breaks points at 4-3 on the Murray serve and the Scot showed his frustration by smashing his racket on the ground when the Serbian won the second of those.
Djokovic needed just one of his three set points to hold serve and give himself the upper hand at Melbourne Park.