The mystery of Tom Brady's knee injury has apparently been solved.
The Tampa Bay Times and NFL Network reported on Thursday that Brady played last season with a fully torn medial collateral ligament in his left knee. According to the Times report, Brady sustained the injury the previous season while playing with the New England Patriots.
Brady had surgery to repair the MCL tear in February after leading the Bucs to a Super Bowl win over the Kansas City Chiefs. That Brady had suffered a knee injury and underwent surgery was previously reported.