Australian Open 2019: 3 players who can challenge the Big 3 in Melbourne

2. Kei Nishikori

The Asian and Japanese No. 1 couldn't have asked for a better start to 2019, as he captured the Brisbane International.

Last year wasn't the best of years for Kei Nishikori, as he returned from an injury and failed to win even a single title. But he regularly made it to the later rounds of big events, and qualified for the ATP Finals where he defeated Federer in the group stages.

From Brisbane to Melbourne with hope

Yet to win a Grand slam title in his career, Nishikori would love to carry on his Brisbane form to Melbourne and win his first career Major. It won't be easy, but he has the talent and temperament to do so. He has already reached a Major final - in 2014, at the US Open.

A well rounded player with equally good forehand and backhand, Nishikori has a game that is well-suited game to the fast Melbourne hard courts. He would be hoping to become the first Asian men's singles champion.