The grand slam season kicks off at the Australian Open on Monday.
Roger Federer and Caroline Wozniacki defend their titles while the likes of Novak Djokovic, Rafael Nadal, Serena Williams, Simona Halep and Naomi Osaka will be among the favourites.
Here, Press Association Sport picks out 10 players who will be looking to make headlines at Melbourne Park.
The Ukrainian had little to cheer in 2018 until the final week, when she defeated five top-10 rivals to lift the trophy at the WTA Finals. Svitolina has underachieved at the grand slams, making just three quarter-finals, but if she can find her best form then her name deserves to be in the mix.
Had Sabalenka rather than Osaka come out on top of a close fourth-round battle at the US Open, it might just have been the Belarusian's name on the trophy. Still only 20, Sabalenka possesses fearsome power and an intensity to match. Began the season with a title in Shenzhen.
Barty is getting used to having the weight of Australian expectation on her shoulders but does not seem fazed. Her all-court game is growing in authority and arrives full of confidence after defeating Halep on her way to the final in Sydney, which she lost narrowly to Petra Kvitova.
The Moscow-born American has been groomed for stardom from a young age and, at 20, is starting to make real waves. Won her maiden WTA Tour title on Saturday in Hobart without dropping a set to break into the top 40.
Two 17-year-olds finished 2018 inside the top 100 – Russian Anastasia Potapova and American Anisimova. Anisimova's achievement was all the more impressive considering she missed four months of the season with a foot injury. Her all-round qualities should see her rise fast.
The similarities between Svitolina and Zverev were inescapable even before both won their end-of-season tournaments. Zverev's success at the ATP Finals, beating Federer and Djokovic back-to-back, plus Ivan Lendl in his corner, suggests that a grand-slam breakthrough will surely come soon, although a hamstring problem is a big worry for this tournament.
Khachanov built up a nice head of steam during 2018. After pushing Nadal at the US Open, he joined a select group of current players to have won Masters events with victory in Paris. Hugely powerful with a good attitude. Fellow 22-year-old Russian Daniil Medvedev is also a big talent to watch out for.
Coric has been earmarked for future stardom since his junior days but 2018 was the year when he matured physically and with it came a string of impressive results, including beating Federer to win the title in Halle. Davis Cup success followed with Croatia and he appears headed for the top 10.
The hottest young talent in men's tennis, Greek Tsitsipas cemented his status by winning the ATP Next Gen finals in Milan. Looking like an 18th-century poet but with a 21st-century game, the 20-year-old is determined to stand out from the crowd on and off the court but must deal with increased expectation.
Alex De Minaur
Having begun last season as a little-known teenager ranked outside the top 200, 19-year-old De Minaur finds himself going into this tournament as the top-ranked Australian after winning his maiden ATP Tour title in Sydney. A supreme athlete with an excellent temperament and work ethic.