Detroit Lions training camp: Sept. 1

Lions quarterback Matthew Stafford stretches out at the start of practice.

Lions cornerback Jeff Okudah heads to the next drill during practice.

Lions defensive end Romeo Okwara hits the sled during drills.

John Penisini

Lions linebacker Jamie Collins Sr. brings down a loose ball during drills.

Lions safeties Will Harris and Duron Harmon run to the next drill.

Lions safety Will Harris runs to the next drill.

Lions rookie safety Bobby Price chases down the ball during drills.

Lions rookie safety Jalen Elliott readies for a reception during drills.

Bobby Price works against cornerback Dee Virgin during drills.

Lions rookie wide receiver Quintez Cephus readies for a reception during drills.

Lions defensive back Mike Ford can't bring down a high pass during drills.

Lions receiver Victor Bolden brings in a reception during drills.

Lions wide receiver Tom Kennedy readies his hands for a reception.

Lions rookie safety Jalen Elliott chases down defensive back Tracy Walker during drills.

Lions receiver Jamal Agnew heads to the next drill while working with the wide receivers.

Lions wide receiver Tom Kennedy gets a water break before the next drill during practice.

Rookie long snapper Steven Wirtel (left) and 17-year veteran long snapper Don Muhlbach look on during practice.

Lions wide receiver Marvin Jones Jr. brings down a reception during drills.

Lions wide receiver Marvin Hall brings down a reception during drills.

The Lions' Jamal Agnew works with the wide receivers druring drills.

Lions wide receiver Tom Kennedy brings down a reception during drills.