Ravens rookie defensive end Kapron Lewis-Moore will remain on the reserve-non-football injury list and won't be activated this season, the team announced.
Lewis-Moore had reached the end of his three-week window to be placed on the active roster.
Lewis-Moore had been practicing, making progress after tearing his anterior cruciate ligament while playing for Notre Dame in the BCS national title game against Alabama in January. A sixth-round draft pick, Lewis-Moore had 40 tackles, six sacks and two forced fumbles last season as a senior for the Fighting Irish.
This week, Lewis-Moore said his knee was doing better.
"Yeah, I'm making progress," Lewis-Moore said. "I'm just trying to get better. I can't really do too much without a training camp. I'm just trying to be careful. I'm just trying to go out there and get my timing right, work on my technique.
"I'm just a patient guy. I'm not going to rush anything. You can only control what you can control. It's out of my hands. All I can control is my attitude and my work ethic. Nothing but progress, my knee feels great. I'm not timid or hesitant with my knee."