DE Vernon Butler, who had a slow start to last season because of an injury, went down in the preseason opener with a high ankle sprain that could keep him out of action for a while during training camp. He exited in the first quarter against the Houston Texans.

WR Austin Duke, a rookie who is from Charlotte, caught a couple of passes in the first preseason game. He also had a drop.

K Harrison Butker's 51-yard field goal in the preseason opener might have upped the ante in the kicking competition with K Graham Gano. Butker is a rookie out of Georgia Tech.

WR Curtis Samuel turned 21 on Friday, though the rookie out of Ohio State remains out with a hamstring ailment that is similar to his condition in the spring, he said.

LB Luke Kuechly, who missed the latter part of the 2016 season as he dealt with concussion issues, has been active in training camp and he played a series in the first preseason game. He was without a tackle.