Scenes like the one pictured here, this one an Allen Hurns touchdown from Blake Bortles on Firday night, have been far too common in recent seasons. The Lions coverage has been a step late and a count slow to react for years now.
The coaching change has apparently not cured the ailment.
Starting corners Darius Slay and Rashean Mathis have generally played solidly in preseason, though both have some negative plays on the ledger too. PFF has negative grades on the starters in pass coverage, the most critical component of their job.
The depth chart at cornerback behind those starters remains completely unsettled. Unfortunately that's a function of nobody stepping up to seize a role. The best of the lot has been Cassius Vaughn, a guy who played his way out of a starting role with the Colts.
Struggles with the stringent enforcement on illegal contact are a real problem. Bill Bentley, the projected slot man, has unsuccessfully battled this issue all summer.
Chris Greenwood has had some positive moments, but he was worse against Jacksonville than his minus-1.6 PFF grade would indicate. That's him in the background of the picture, beaten like Keith Olbermann's proverbial rented goalie.
The safeties have not provided much comfort either. Glover Quin has looked fantastic in practice, but he's struggled in the games. James Ihedigbo plays the run impressively, but he's a liability playing more than about 12 yards from the line of scrimmage in coverage.
At least the depth at safety has shown some potential. Isa Abdul Quddus and Jerome Couplin are both very active and rangy, proving they can be a solid second unit. However, they both showed why they're not starters against Jacksonville:
It would be a stretch for the Lions to rely upon them in extended regular-season action.