I am not quite sure how reputable this website is but here it is. Breaking News: Three Prospects Test Positive Written by NFL Draft Bible Thursday, 02 April 2009 22:36 Boston College DT BJ Raji, Illinois CB Vontae Davis & Florida WR Percy Harvin tested positive for marijuana at the combine, according to various sources, including one NFL team. http://www.nfldraftbible.com/Latest/three_prospects_test_positive.html NFLDraftBible.com reports that Florida WR Percy Harvin, Illinois CB Vontae Davis, and UTEP K Jose Martinez all tested positive for marijuana at February's Combine. The website also claims that USC OLBs Brian Cushing and Clay Matthews tested positive for steroids. Information like this is sometimes circulated by teams in hopes players' stocks will fall and no other reputable sources have picked up the reports to this point, so take this cautiously. Harvin, Davis, Matthews, and Cushing are all projected first-round picks.