Report: Failed test cost Hernandez

New England Patriots rookie tight end Aaron Hernandez had at least one failed drug test at Florida for marijuana, and possibly more, which contributed to him slipping to the fourth round of the NFL draft, the Boston Globe reported Monday night.

The Globe quoted unnamed sources from three NFL teams in the report. The report stated that Hernandez passed his drug test at the combine, which means he won't start his NFL career in the league's substance-abuse program.

The Globe report quoted one NFL longtime executive who said Hernandez "had multiple positive tests" at Florida.

According to the report, Hernandez was open with teams at the NFL combine about his past marijuana use, explaining that it stemmed from the 2006 death of his father, Dennis, who died of complications following hernia surgery while Hernandez was a junior in high school.

Mike Reiss covers the Patriots for ESPNBoston.com.