5) Alexander Zverev (Germany)
Alexander Zverev, for me, has been one of the most promising young talents on the tour for a while. Last year turned out to be a breakthrough season for him.
He won 5 titles, which included his first two Masters titles. He won his first Masters' title at the Rome Masters by defeating Novak Djokovic in the final. In his second Masters final, he defeated Roger Federer in the final. He was performing at such a high level that he was deemed as one of the favourites to win the title at the US Open.
Despite his rather lukewarm performances at the Grand Slam level (he has never gone past the 4th round), he finished the year at a career-high ranking of World No.4.
He qualified for both the NextGen ATP Finals and also the ATP World Tour Finals, deciding to compete at the senior-level World Tour Finals. He lost in the group stage.
He possesses a great serve and an excellent double-hander backhand. His game is a very aggressive one, and his shots are full of power. He is also known for his persistence and work-ethic. He many a time manages to find his fizzing first serve during crunch moments, which has become one of his biggest strengths. But his inability to have a plan B might not pose a problem in general, but against the big guns, that may not always work.
Possessing the maturity that he possesses, if he somehow just manages to find his consistency, one could definitely say that great things lay ahead for this young German. And who knows, one day he may even eclipse his nation’s hero, Boris Becker.