Some teams concerned about Myles Jack's knee.
http://www.nfl.com/news/story/...nions-from-nfl-teams
He did the vertical at the UCLA pro day workout, but skipped the 40 and shuttle drills. At the time he said he'd do those at a workout scheduled for April 1. Then he cancelled that workout. His knee was scoped in September, and normally it shouldn't take 7 months for a full recovery. All media reports have indicated the actual medical report on Jack was OK, so it will be interesting to see if all this talk is smokescreen talk or if some impatient NFL teams are sick of him doing the "I'll run, now I'll do it later, now I won't do it later" stuff.