Top 10 Tennis Teenagers

Nick Kyrgios enjoyed an excellent run in the Australian Open to reach his second Grand Slam quarter-final at just the age of 19 before being knocked out by Andy Murray. Meanwhile, Madison Keys, also 19, has reached her first Grand Slam Semi-final. While Kyrgios and Keys' achievements are impressive, they are by no means unique, as 18 players have won Slams in their …

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