At 19 years and 130 days, the Spanish youngster is no more a talent, but one of the big guys now, especially after winning the US Open.
Lleyton Hewitt is an Australian former world No. 1 and the most recent Australian man to win a major singles title. He also won the 2001 US Open and 2002 Wimbledon.
He became the world no. 1 at the age of 20 years and 298 days. The Russian won his first Grand Slam title at the 2000 US Open.
The American former tennis star became the world no. 1 at 21 years and 16 days and was also the no. 1 in the doubles category.
The former tennis legend Andy Roddick became the world no. 1 at the young age of 21 years and 65 days and also won the 2003 US Open.
The Swedish tennis star player was the first man in the Open Era to win 11 Grand Slam singles titles with six at the French Open and five at Wimbledon.
A world no. 1 at 21 years and 177 days, Jim Courier won four major singles titles, two at the French Open and two at the Australian Open.
A world no. 1 at 21 years and 243 days, Sampras is also the youngest ever to win the US Open at 19 years and 26 days.
Under the captaincy of Lasith Malinga, Sri Lanka finally secured the T20 World Cup trophy in 2014, beating India in the final of the competition.
Another young world no. 1 at 21 years and 330 days, and held the place for a record 160 consecutive weeks from 1974 to 1977.