Five things we learned from 2018's Australian Open

Caroline Wozniacki and Roger Federer left Melbourne clutching the trophies after an Australian Open packed full of storylines.

The eventful passage of Wozniacki and Simona Halep to the women's final and their tremendous duel for the title captured the imagination while Kyle Edmund and Chung Hyeon made their big breakthroughs on the men's side.

Here, Press Association Sport picks out five things we learned from the Australian Open.

Federer's passion

Federer makes tennis appear so effortless that it is often overlooked just what a tremendous competitor he is. When the going gets tough, there are few grittier than Federer. In his quarter-final against Tomas Berdych, when he was in trouble in the first set, he picked a fight with the umpire to fire himself up, and at break points down in the opening game of the fifth set in the final against Marin Cilic, he simply refused to buckle. There is no doubt that Federer's passion for winning as well as for tennis burns as bright as ever.

If at first you don't succeed

It was tough to remember a final with so much riding on it for both women as the clash between Wozniacki and Halep. Both in their third slam final having lost the first two,...