ALLEN PARK, Mich. (AP) -- Detroit's much-anticipated defensive front has looked flat so far this season.
This was supposed to be a strength for the Lions, who added defensive linemen Trey Flowers and Mike Daniels in the offseason and traded for Damon Harrison last year. The results have been decidedly mixed, and last weekend, Detroit struggled to stop the run and rush the passer in a 42-30 loss to Minnesota.
The Lions have played some tough opponents, and their defensive numbers aren't good: They've allowed 429 yards per game, with opponents having success both on the ground and through the air.
"I thought that it was probably closer than where it was yesterday," coach Matt Patricia said Monday. "I thought yesterday was not where it has been in the past. I think I definitely saw that on tape. That's why I wanted to go back today and make sure that I was teaching it again, to make sure that I didn't leave anything out from that aspect through the course of this week that caused us not to play up to some of the technique that we had been doing at this point."
The Lions have faced a tough slate of quarterbacks so far. Their last five games have been against Phillip Rivers, Carson Wentz, Patrick Mahomes, Aaron Rodgers and Kirk Cousins. Their losses to Kansas City and Green Bay were close, but there were few silver linings at home against the Vikings.
Even amid the excitement of a revamped defensive line, the Lions were dealing with injuries as early as training camp, when Flowers and Harrison missed time. That may have contributed to some of the team's problems.
"That is one of the things I talk about all the time, how important training camp is -- those reps in training camp. The cumulative amount of reps that we get in camp far outweigh the Wednesdays or every other Wednesday kind of repetition that we get," Patricia said. "It makes it really difficult to catch up and unfortunately, we have to do it every single way we can possible."
With the exception of a puzzling fourth-down play in the fourth quarter, the offense seemed sharp against the Vikings. Matthew Stafford threw for 364 yards and four touchdowns, and the team's only turnover came late, when the Lions were rushing to try to make up a 12-point deficit.
WHAT NEEDS HELP
The defensive line has fallen short of expectations, but the whole defense has room for improvement. Minnesota punted only twice Sunday and had 32 first downs.
Marvin Jones had 10 catches for 93 yards and four touchdowns. Jones was an effective target in the red zone -- all of his TDs were from 16 yards or fewer.
Harrison spoke at length Monday and put some of the blame on himself for Detroit's struggles up front. The Lions are allowing 139 yards per game on the ground, compared to 110 last season.
"It really starts with me up front," Harrison said. "I have to do a better job in the middle, and getting some of those plays that I'm used to making, that I'm not making this year. It's a lot of things that I can blame it on, but the only thing that I can do at the end of the day is just throw effort at it during the practice week and try to perform on Sunday."
Running back Kerryon Johnson (knee) and cornerback Darius Slay (hamstring) were injured during the game and did not return. Patricia addressed Johnson's status Monday, but did not offer much in the way of new information.
"I know he met with the doctors this morning, we rolled into a team meeting, and then went into offensive and defensive meetings, so I'll get together with them," Patricia said. "I saw him, and he said he was fine, but it wasn't really a deep conversation."
1 -- The number of sacks for Flowers so far this season, and the numbers of tackles for Daniels, who has missed three games.
The schedule appears to ease up a bit. Detroit hosts the New York Giants on Sunday before a road game against Oakland.