Apparently it's not a hamstring or a concussion. Jordy Nelson said after "I'm good. We got a little banged up, but we'll be good."
Fantasy Impact:
Nelson didn't play on the team's final drive. Reports on NFL.com said he had a hamstring issue, but they were later retracted. It was called an "undisclosed injury" instead. Be sure to monitor, but Nelson seems good to go for Week 6.