The first "yikes" moment of training camp came Thursday.

Working in the red zone, the offense ran a pass play, with Sam Bradford finding wide receiver Brice Butler inside the 5-yard line. Butler slid to make the catch and linebacker Deone Bucannon, coming from the backside, tried to leap over the prone Butler and avoid a hit. Instead, Bucannon's left knee slammed into Butler's helmet, and Bucannon went down. It got quiet fast, but after a minute, Bucannon was able to get up and walk off the field.

Defensive coordinator Al Holcomb said afterward that Bucannon was a tough guy and he'd be fine, and early returns point that way. But it was one of those moments you hold your breath.

-- Tackle Andre Smith, safety Antoine Bethea and defensive tackle Corey Peters got a veteran day off.

-- That didn't protect Bethea from being Larry Fitzgerald's first sneak-attack ankle tackle of training camp.

-- Earlier in the day, coach Steve Wilks had talked about how important it was for the players to be focused on practice and a quick start after a day off Wednesday. He got it, especially early. Thursday's work was the most physical of camp thus far.

-- Cornerback Jonathan Moxey was sitting out, and linebacker Airius Moore and cornerback Lou Young both left during practice.

-- There were a handful of plays that stood out. Josh Rosen hit J.J. Nelson for an early bomb as Nelson continues to show why he's the best bet as a deep threat, even while he works to show he can be more than that. Running back T.J. Logan showed off his burst on a long "touchdown" run, and even fellow back Sherman Badie broke off a long inside gain as the offensive linemen continue to show well in camp. Bradford found tight end Gabe Holmes for a 12-yard TD on third-and-10.

-- Cornerback Brandon Williams made a nice interception on a Mike Glennon pass. Williams is having what looks to be a solid camp, which would be crucial for this team if it extends into games.