The post-Melbourne build-up begins with five tournaments across four continents. We look at the fields in Rotterdam, St. Petersburg, Long Island, Buenos Aires, and Hua Hin.

What does 2195 days have to do with the Serbian, Wimbledon and the Australian Open? Something with ending streaks, apparently.

Once upon a time, tennis champions had a love-hate relationship with their lonely, labor-intensive sport. That all changed over the last decade, led by figures currently carved into the game's Mt. Rushmore: Serena, Federer, Nadal and Djokovic.

The ongoing condition is something the Dane has been dealing with since last summer.

"I happy with it. I happy with the motivation to do something new."

This feels part physical, and part something else, says Jon Wertheim.

The former world No. 4 emerged from a period of emotional turbulence with something to say, and launched the Tennis Insider Club podcast in order to say it.

"The Big Three have taught us so much about the art of winning and what it takes to remain at the top and that is what the younger guys have to learn," said John McEnroe.

With her wide-ranging game and flair for the fight, the Canadian earned her first title with a three-set win over Angelique Kerber.

Roger Federer addresses the Swiss crowd following Team Europe's Laver Cup victory.

Should the chair umpire have done something Wednesday night or was the American making a fuss out of nothing?

Seeking a spotlight, the 50-something Riggs set his sights on women’s tennis, and took on Court in the first Battle of the Sexes.

The key factor, perhaps, has been the amazing cast of characters encompassing some of the greatest players the game has ever seen.

“No titles this year. That's not something I'm used to,” reacted the world No. 1 in press Monday evening at the BNP Paribas Open.

"I think that between all of us we have achieved something important," said the Spaniard.

The Dane triumphed at the ATP 500 event Sunday with a 7-6 (6), 6-2 victory.

“I’m chasing something spectacular,” the Greek said after his impressive straight-sets win over Andrey Rublev in the quarterfinals.

The American endured a significant slump after winning her first Grand Slam title, at the 2017 US Open. Osaka is experiencing something similar now.

"When I arrived [six days ago], I felt good but since three days ago I caught something," said the world No. 1.

"But, of course, I want to have something more," remarked the defending champion following her fourth-round win over Amanda Anisimova Sunday.