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FIFA: Doping samples clean

FIFA says all samples have tested clean in its World Cup anti-doping program.

RIO DE JANEIRO -- FIFA says all samples have tested clean in its World Cup anti-doping program, though no unannounced controls have been made in Brazil.

FIFA's chief medical officer Jiri Dvorak says analysis of all pre-competition and post-match samples was completed through the first quarterfinal match last Friday.

All 736 players have given blood samples for their individual biological passport. Two players from each team are randomly picked to give samples after each match.

Dvorak says no doping controls were taken on days between matches.

He says all samples "arrived in good condition" at the World Anti-Doping Agency-accredited laboratory in Lausanne, Switzerland, where samples are tested. WADA revoked the Rio de Janeiro lab's credentials last year.

No player has tested positive at a World Cup since Argentina great Diego Maradona in 1994.

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