Apr. 7, 2018 11:07 AM PT12:07 PM MT1:07 PM CT2:07 PM ET18:07 GMT2:07 11:07 AM MST1:07 PM EST1:07 PM CT22:07 UAE14:07 ETNaN:� - Davis said he has been suspended by the NFL and will miss the first four games of next season after testing positive for a banned substance. Davis posted a video on his Twitter account on Friday saying that he tested positive for an estrogen blocker. Analysis: Davis was Carolina's first-round draft pick in 2005 and has spent his entire career with the Panthers. He's seventh in team history with 13 career interceptions and eighth with 28 sacks. Davis said earlier this offseason that the 2018 season would be his last in the NFL. But he left open the possibility of playing beyond 2018 on Friday, saying "who knows, maybe this isn't my last year."