Every player tested for drugs at the World Cup in Brazil has been cleared of doping after more than 1,000 tests came back negative, FIFA's medical committee announced on Monday.
FIFA is expected to conduct surprise doping tests of all World Cup players at least once beginning in March, setting up biological passports to determine possible irregularities in blood and urine samples. FIFA chief medical officer Jiri Dvorak said all teams and players should be tested unannounced between March 1 and the World Cup opener in June.