"You just can't keep him of the field, and we had not been able to keep him out of the starting lineup," Richt said. "You just wouldn't have predicted after that knee injury that he would come back that strong. There has been absolutely no sign of any injury at all since camp began."
Brown missed the last six games of 2006 after tearing his ACL returning a kickoff against Vanderbilt.
"It's extremely gratifying," he said. "When I tore my ACL last year there was a lot of negativity, people telling me I would have to redshirt this year. I just have to get back to doing what I do."
Richt declined to predict how many carries Lumpkin and redshirt freshman Knowshon Moreno will get.
"They'll get carries, I couldn't say number of carries," he said. "We might, as the season goes along, have a gauge on percentage of carries."