Tony Lumpkin, the player's father, said Monday night that Ron Courson, Georgia's director of sports medicine, indicated to him that Kregg had suffered ligament damage.
"It seemed like it was a little loose, (Courson) said," said Tony Lumpkin. "They were doing an MRI on it. I'm still waiting for Ron to … let me know exactly what's the deal."
Lumpkin spoke at a Monday afternoon press conference about his desire to be the Bulldogs' featured back this season, but then left midway through a late afternoon practice. Coach Mark Richt said he didn't know the extent of the injury as he left the practice field Monday evening.
"I don't know, but we're going to find out," he said.
Richt could not be reached for further comment Monday night. Kregg Lumpkin also could not be reached for comment.
"Last year was the same thing," Tony Lumpkin said. "He got injured in the very first beginning of practice."
Last season, Kregg Lumpkin suffered a pulled hamstring on the team's first day of contact work that set him back weeks. Still, he developed into the team's most dynamic tailback, starting the final game of the season and rushing for 489 yards on 108 carries.
If he is lost for the season, the Bulldogs will turn to true freshman Danny Ware and sophomore Michael Cooper of Screven County. Ware has impressed the team's coaches with his chiseled 6-foot-1, 210-pound frame and running ability but has no experience. Cooper started eight games last year and finished as the team's leading rusher with 672 yards.