Joao Fonseca, 18, wins maiden title in Buenos Aires

Four quarterfinal spots will be up for grabs at the ATP 250 in Buenos Aires. Second seed Holger Rune gets his campaign ...
With a veteran’s poise and a teen’s fearlessness, the 18-year-old Brazilian beat four Argentines in their home stadium.
Joao Fonseca became one of the youngest ATP finalists in history on Saturday ... 6-1 in a dramatic semi-final in Buenos Aires. "Really special," Fonseca said after claiming victory.