"I wouldn't throw a blanket on it and say if you're a first-rounder you shouldn't come here because there's guys that are coming up behind you that want that spot," Savage said. He encourages players who are projected as late first-rounders or early second-rounders to participate.
Top linebacker prospect Anthony Barr of UCLA was among 19 other invites who are recovering from injuries.
Their absences opened up slots for others, a potentially useful reminder for future pros.
"It's just like the big leagues," Savage said. "It's next man up. That's the stark reality of pro football."