Teenage sensation Fonseca loses in the first round in Rio days after winning his first ATP title
Teenage tennis sensation João Fonseca frustrated his home fans at the Rio Open in a first-round loss two days after winning ...
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Who is the world No.1 in men's tennis? Updated ATP rankings and explainer
The mantle of world No.1 in tennis is something every player aspires for, but few ever achieve.  When it comes to men's singles, only a handful of names have held the top spot over the past two ...