ALLEN PARK —  With Calvin Johnson, Bryant Johnson and Dennis Northcutt — the Lions’ top three wide receivers — missing so much training camp due to injury, it’s given the other receivers increased reps and more of a chance to shine. But no one has cemented one of those coveted roster spots.

Even last week, the Lions signed veteran free agent Dane Looker who impressed Martin Mayhew, the Lions' general manager, in Saturday's loss at Cleveland.

“There are still areas people can jump up and take charge. What we can’t have is what we had last week — five drops. When there are jobs open we need to see players capitalize,’’ coach Jim Schwartz said.

Both Johnsons and Northcutt participated in today's practice and, if they stay on track, should see their first preseason action on Saturday when the Lions host Indianpolis at Ford Field. For more about the Lions' offense, see Tuesday's Oakland Press.

— PAULA PASCHE