MLive will preview each of the Detroit Lions' position groups heading into the start of training camp on July 27. Today: Defensive line. Previously: Running back | Quarterback | Offensive line | Receiver/tight end
Roster locks: Ezekiel Ansah, Kerry Hyder, Da'Shawn Hand, A'Shawn Robinson
Competing: Anthony Zettel, Cam Johnson, Cornelius Washington, Jeremiah Valoaga, Alex Barrett, Sylvester Williams, Akeem Spence, JoJo Wicker, Josh Fatu, Christian Ringo, Jeremiah Ledbetter, Toby Johnson
Notable departures: Haloti Ngata
Breakdown: From A(nsah) to Z(ettel), there are a whole lot of familiar faces back.