Any doubts about Bradford's health appeared to be answered to Kelly.
"I didn't have any doubts on Sam, so I'm not concerned what people outside think," he said.
Cobb didn't make it nearly that long.
He left with a shoulder injury after landing hard on his right side while trying to catch a pass near the sideline on the first series for the Packers (1-2). Cobb said a defender landed on top of him.
But it doesn't appear that Packers coach Mike McCarthy is nearly as worried about Cobb as he was when Nelson tore his ACL.
"We thought it could've been collarbone or something; it's not. So, fortunately enough, there's a silver lining in it," Cobb said.
More tests are planned during the team's day off on Sunday, but Cobb said he didn't think this was a serious injury. The Packers would be in deep trouble if they lost Cobb for any length of time.
"It felt like a bad dream in that situation, having Jordy go down last week and then three plays in this series," Cobb said.
Copyright 2015 by The Associated Press