Welcome to the 2013 version of Insider's offseason staple series: Red Flags. This is the third of an eight-part examination in which Football Outsiders identifies the biggest remaining issue for every NFL team, division by division, after the NFL draft.
The series continues Wednesday with Outsiders' look at the AFC South.
Houston Texans: Wide receiver
Andre Johnson was perhaps the second-best wide receiver in the NFL in 2012, thanks to a return to health after missing multiple games in both 2010 and 2011. With the release of Kevin Walter, whose salary was outsized considering his declining level of production, the rest of the depth chart at wide receiver is young and unproven.
That starts with first-round pick DeAndre Hopkins. Considered about the most pro-ready receiver in this year's draft, the Texans are counting on his relatively polished route-running skills and natural hands to let him step in as a starter immediately. Most late first-round receivers of late have been eased into the lineup, but the Texans need Hopkins to be a high-impact player immediately.