It's been almost a week since the first Grand Slam champions of 2015 were crowned at Melbourne Park. So what did we learn for the season ahead? Wimbledon.com makes 10 suggestions...

1. Novak Djokovic is never better than when he is on the baseline of the Rod Laver Arena. Just as a good chunk of Roger Federer's 17 Grand Slams have come on the grass of the All England Club - he has seven Wimbledon titles - and Rafa Nadal's portfolio of 14 majors is Roland Garros heavy with nine French Open wins, Djokovic has his own Slam where he excels. Five times Djokovic has played in the final of the Australian Open, and five times he has lifted the Norman Brookes Challenge Cup, which is more than anyone else in the modern era (the only player to have won more is the man who presented him with the trophy, though all six of Roy Emerson's victories came during the amateur era). With his first major as a father, Djokovic put himself level with Andre Agassi, Jimmy Connors and Ivan Lendl on eight Grand Slams. There are now only four men ahead of the Wimbledon champion and world number one on the list of the most successful players in modern tennis history - Federer, Nadal, Pete Sampras (who has 14), and Bjorn Borg (who has 11).

2. The way that Serena Williams played against Maria Sharapova - and wasn't that a superb final? - there is reason to wonder whether the American will equal Steffi Graf's modern-era record of 22 majors as soon as this season. With her 19th Grand Slam title, Williams is now in outright second position on the modern-era leaderboard (she had been tied with Martina Navratilova and Chris Evert). Illness had complicated Williams' preparations for the final - and during the match she had to leave the court at one stage to vomit - but that wasn't going to stop her from winning her sixth Australian Open title, a record for the professional era, and from extending her dominance over Sharapova to an astonishing 16 successive victories. So she trails Graf by three majors, and Margaret Court, who won her titles in the amateur and professional eras, by five. But has William already done enough to be called The Greatest of All Time?

3. No one in tennis perseveres as Andy Murray does. So Murray has now lost all four Australian Open finals he has played, but you have to think he will give himself more opportunities at Melbourne Park in the future. Consider how he lost his first four Grand Slam finals before winning his fifth at the US Open. For all the disappointment that Murray felt after his defeat to Novak Djokovic, there was much for him to take from the fortnight. It was his first major final since having a back operation, as well as his first since hiring Amelie Mauresmo, and his first since winning Wimbledon in 2013. And the Murray camp had some fun along the way - after all the fuss about his fiancée Kim Sears swearing during the semi-final against Tomas Berdych, she appeared for the final in a T-shirt that read: 'Parental advisory - explicit content.'

4. In fact, there is someone else in tennis with Andy Murray's tenacity and that's Maria Sharapova. So the Russian hasn't beaten Williams since 2004, the year she scored wins against the Californian in the Wimbledon final and at the season-ending championships in Los Angeles. But don't suppose that Sharapova is ever going to stop having a go - why, in Melbourne, she was even throwing in some drop-shots. Sharapova isn't someone to turn away from a challenge. "Serena is the best," she observed, "and a tennis player wants to play against the best."

5. Madison Keys, who appeared in her first Grand Slam semi-final at Melbourne Park, has a game that could take her far at Wimbledon this summer. She also has a coach, Lindsay Davenport, with past experience of going through the draw-sheet at the All England Club.

6. Too often during the years he spent working with Andy Murray, Dani Vallverdu was described as a mere 'hitting partner' - the Venezuelan was always much more that, and his abilities as a coach were very evident from watching Tomas Berdych in Melbourne. Berdych already has all the power he needs, and Vallverdu wasn't employed to add some extra oomph to the Czech's game; what the South American has done is to introduce a little more thought and strategy into Berdych's tennis. Among the rewards for Berdych was a quarterfinal victory over Rafa Nadal, which ended his losing streak against the Spaniard, which had reached 17 matches. The next match, against Murray, was not without its tensions as the Briton came from a set down to defeat Berdych.

7. Venus Williams is looking fierce and fabulous again, and surely won't be restricted to a cameo role at Wimbledon role this summer (a tournament she has already won five times, the same number as her sister). Her trip Down Under brought her a first Grand Slam quarterfinal since 2010, and a first since she discovered she was suffering from an autoimmune disorder. 

8. There would be greater chance of Roger Federer shaving lines into his eyebrows than of Nick Kyrgios, who so loves the stage, being blinded by the arc-lights. When Kyrgios walked on court for his opening match of last summer's Wimbledon, he was unknown to many of the British tennis public; when he returns to London this June, he will doubtless be sold as 'The Wonder from Down Under'. It was Wimbledon last summer that the Australian teenager announced himself by beating Rafa Nadal on the way to his first Grand Slam quarterfinal, and in Melbourne he again raised pulse-rates and eyebrows (shaved or otherwise) with his talent and outrageous shotmaking. For the second time at the last three Grand Slams, he made the last eight, this time stopped by Andy Murray. 

9. The Big Four aren't going anywhere just yet. Stan Wawrinka, last year's champion and a beaten semi-finalist this season, is out of the top four in the rankings. He is replaced by Andy Murray, who is reunited with Novak Djokovic, Roger Federer and Rafa Nadal.

10. Let's not be too alarmist about the early departures for Roger Federer and Rafa Nadal. So Federer lost in the third round to Italy's Andreas Seppi (an opponent he had beaten in their previous 10 meetings), which made it the first year since 2003 that he didn't reach the semi-finals or further. But there's no reason to think that Federer, a runner-up at Wimbledon last year, won't again challenge on the lawns this summer. Federer's view is that it was "just a bad day", and can't we allow a 33-year-one one of those occasionally? Let's not forget that he wasn't that far off finishing last season at the top of the rankings, which would have been an extraordinary achievement. Nadal was always going to be raw, giving that he had hardly played since Wimbledon, as a result of a wrist injury and appendicitis. Beaten in the last eight by Tomas Berdych, Nadal is still most people's favourite for Roland Garros, where he will be hoping to win a tenth title. 

What did we miss? Let us know in the comments below...