...I thought solidified a PS spot last night. He's shown up well all preseason.
From PFF:
DL Casey Sayles, 82.4 overall gradeSayles played as many snaps versus the Chargers as he did in the first two preseason games combined (24) and has shown improvement each week. The rookie made two run defense stops on just 11 snaps against the run. While he failed to get a pressure, he did get a batted pass on third down to force a punt and get the Rams offense the ball back in the final three minutes of the game when down two points.