The NFL has released a statement denouncing unconfirmed rumors about draft prospects failing drug tests. The statement comes in the wake of an Internet report that USC linebackers Clay Matthews and Brian Cushing tested positive for steroids at the scouting combine, a report that USC Coach Pete Carroll, the NFL and others have staunchly denied. In a one-sentence Web report posted Thursday, NFLDraftBible.com wrote that the USC linebackers tested positive "according to various sources, including one NFL team." But the league's statement said: "Neither the 32 clubs nor the league office know the results of drug or steroid tests taken at the 2009 Combine. The independent medical advisers who administer the tests have notified in writing those players and only those players who tested positive at the Combine. "Unfortunately, rumors about draft eligible players, including rumors about test results, begin to circulate every year at this time. Many of these rumors are circulated for self-serving reasons and they are terribly unfair to the players and their families."