Webb left practice early and didn't return. He didn't need assistance leaving the field.
The team didn't indicate what Webb injured. Chykie Brown filled in for Webb with the starting defense for the rest of practice.
"Webby got dinged a little bit today," secondary coach Steve Spagnuolo said.
Here are other notes:
Is Rice appealing?: Harbaugh said he doesn't know whether running back Ray Rice is appealing his two-game suspension. "If I did, I wouldn't tell you," Harbaugh said. "That's not for me to say. But I don't [know]."
Ravens weigh in on Hill: I wrote earlier today about how the Ravens signing safety Will Hill is a bad move considering the troubles this offseason. Why did the Ravens add someone like Hill? "If we need it, Will will provide depth in the middle of the season,” general manager Ozzie Newsome said in a statement. When asked after practice, Harbaugh said, "From the football part, I got a chance to get to know him and I like where his head is at right now. Then, we'll see how it does."