Trey Flowers is arguably the best and most important player for the Lions Defense. If Flowers stays relatively healthy, I'm confident he will build on his play from the 2nd half of last season.
The Lions need Trey Flowers to make a greater impact than he did on average in the first four games. Not only as a pass rusher but vs. the run. Flowers is being paid as an elite DE. He's not playing poorly or close to that. But being above average isn't enough.