What it means: As we told you going into the season, the Giants' offense is not a finished product. Not even close. But the problems go well beyond whether they're picking up offensive coordinator Ben McAdoo's new schemes. The Giants' problems are about personnel. The offensive line isn't good enough. They don't have enough at wide receiver, as Victor Cruz is easily erased from the game and Jerrel Jernigan and Rueben Randle aren't reliable. They have no dynamic tight end. And they didn't run the ball especially well Monday, either. Eli Manning's interceptions were bad, especially the second one, but the quality of the group around him needs to improve.
Stock Watch: The new Giants' secondary, DOWN. Yes, I know Calvin Johnson makes everybody look bad, but the breakdowns in the zones were terrible, and Dominique Rodgers-Cromartie made way too many mistakes, letting Johnson go into empty space on the first touchdown and letting Golden Tate get past him for a critical 44-yard catch on third down in the second half. The Giants aren't good enough on offense to allow for a leaky secondary. This is supposed to be the strength of the team, but it was a weakness Monday.
Line must improve: Pass protection was Manning's biggest problem last year, was a major issue in the preseason and was terrible again Monday night. Left tackle Will Beatty looks lost, and he and the rest of the offensive line need to figure out some things in a hurry if the Giants are to avoid a repeat of last year's offensive crater.
Game ball: Defensive tackle Cullen Jenkins. The one bright spot, I thought, was the Giants' run defense, led by the play of the beefy defensive tackles on the inside. Especially with only three of them active for the game, Jenkins, Johnathan Hankins and Mike Patterson had to handle a lot of the load and held up well, limiting a talented Detroit running game to 76 yards on 30 carries. Jenkins made the plays that stood out most to me, so I pick him.
What's next: The Giants host the Arizona Cardinals at 1 p.m. ET on Sunday at MetLife Stadium.