RIO DE JANEIRO, Feb. 9 (Xinhua) -- Vasco da Gama's 14-years-old player Wendel Junio Venancio da Silva suffered what appeared to be a heart stroke during the team's under-15 practice on Thursday. Breaking into convulsions, the teenager died on the field.

Under the intense heart of Rio de Janeiro's interior city of Itaguai, the teenager suddenly collapsed only twelve minutes into the team's practice.

Despite the quick response of the club's medical staff to revive the athlete, Silva died on the playing field.

Vasco da Gama pledged to offer the player's family support and declared three days of mourning for the tragic and unexpected death.