The rookie wide receiver missed his fifth straight practice with a knee injury that has been described as bruised and sprained. He's expected to be out another couple of days, according to coach John Harbaugh.
"I want him out here right now; he wants to be out here, but [the training staff is] holding him back," Harbaugh said. "It's probably smart. [The training staff is] smarter than Breshad and I are about it; I know that."
Perriman was injured on the first day of camp, when he fell on his knee while catching a ball. He could potentially miss the Ravens' opener Aug. 13 if he doesn't return by next week.
The hope is the missed practice time won't affect the development of Perriman, who was battling Kamar Aiken for a starting job.
"At the end of the day, he needs to practice as much as he can," offensive coordinator Marc Trestman said. "It's not his fault that he's not practicing, but we know that Bobby [Engram, wide receivers coach] is going to spend a lot of time with him. But you can't overestimate the importance of him being on the football field. He is a very smart young man; he's got very good football sense. But ultimately, we need to get him out here as soon as we can, and as soon as the doctors and the trainers OK that, he'll back on the field and we'll get him back up to speed.”
In addition to Perriman, Marlon Brown has been sidelined for three of the last four practices with a back injury. That means the Ravens are without two of their top four wide receivers.
A magnetic resonance imaging test revealed no problem with a disc, which had been a concern, but there is an issue with a nerve.
"I don't know how long it's going to take," Harbaugh said. "I hope not very long, so we'll have more on that later.”
Here is an update on other injured Ravens:
LB Elvis Dumervil (tendinitis) returned after missing four straight practices, although he was limited in team drills.
OL Ryan Jensen (foot) left Wednesday's practice early but his issue is not considered serious.
LB Zach Thompson (undisclosed) didn't practice Wednesday.
SS Matt Elam (biceps) is out for the season.
TE Dennis Pitta (hip) is on the physically uUnable to perform list.
FS Terrence Brooks (knee) is on PUP.