The Seattle Seahawks made another roster move along their defensive line on Tuesday, just a few hours ahead of their sixth training camp practice and second in full pads. Seattle waived nose tackle Justin Rogers and signed undrafted rookie defensive lineman Thor Griffith, the team announced.

As the Seattle Seahawks kick off training camp, here's a position-by-position look at how the battles for starting roles and roster spots stack up on defense.

The Seahawks' new-look offense struggled to run the ball, or escape the shadow of its own goal posts, as the physicality ramped up.