Aníbal Zapicán Falco (Fonseca) of Uruguay holds a record that will surely never be beaten.
The Nacional defender won his first international cap for Uruguay 9 days after his 15th birthday.
Football in the 1910s was a physically hard game, and the rivalry between the River Plate nations was heated. So for a youth of 15 to play at right back in an international was quite something.
Uruguay won the game, played at Cancha de Gimnasia y Esgrimain, Buenos Aires on October 4th 1908, with a late goal from José Brachi.
Falco made a good impression and was selected for Uruguay's next 3 matches (all against Argentina). These were his only 4 caps, meaning that his international career came to an end just two weeks after his 16th birthday.
Aníbal Zapicán Falco was president of Nacional in 1937 when they purchased Gran Parque Central stadium.