Andrey Rublev
The 20-year-old Russian continues to impress tennis across the world and on his day is a match for any player, with his hard-hitting and intense style of play. Like Shapovalov, Rublev had success as a junior, winning the French Open boys' title aged 16 in 2014. Unlike the other three youngsters, Rublev has an ATP title to his name, which came on the clay courts of Umag, Croatia last year.
Many will like Rublev because of his expressive and emotional style on the court; a characteristic that will definitely please some tennis fans. His hot-headed nature, however, can get the better of him, thus not allowing him to compose himself and get back to the task at hand.
The Russian's best performance at a major came at last year's US Open, where he reached the second week. His most notable victory came against former world No.3 Grigor Dimitrov, who too played some of his best ever tennis in 2017. He also defeated current world No.7 David Goffin, in the fourth round to progress to the quarter-finals and in doing so, became the youngest man to reach the quarters of the US Open, since Andy Roddick back in 2001.