Costa Rica's football federation has sent a letter to FIFA demanding an explanation for why so many of its players were required to submit to anti-doping controls after a surprise victory over Italy.

Seven Costa Rica players were tested after Friday's 1-0 win, angering team officials who say it could lead to people believing that football's world governing body suspects Costa Ricans of doping.

The president of Costa Rica's selection committee, Adrian Gutierrez, said: "We believe in, accept and trust doping controls that FIFA carries out, but we want an explanation as to why so many of the players were called in." Gutierrez says it gives an "image of suspicion that Costa Rican players are doping."

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