Been do some searching on this injury. Question - when did it first happen? Chad wasn't ready to go on start of TC. I thought I read somewhere is happened around mini camp close in June. If so then he was out for around 5 weeks before he tried to come back. If so he is now going on 8 weeks or so. If it is a grade 3 then it looks like 12 weeks or 3 months would be recovery time looking at reports below. From info on recovery time on hamstring injuries this looks like a grade 3, the worst hamstring injury graded and around 2 - 3 months recovery time. Also read usually Grade 3 require crutches in early weeks which he was not on during TC. But if it happened several weeks before TC no one may have seen. One article said the average NFL hamstring injury recovery time is 14 days. here are a few articles on the subject: http://www.sportsinjuryclinic.net/cybertherapist/back/hamstrings/hamstringstrain.htm http://www.emoryhealthcare.org/departments/sports/sub_menu/hamstring.html Everything I read seems to indicate this was a severe hamstring injury. I don't like what I've read. I hope it is only a grade 2. It certainly is not a grade 1. In a grade 3 which can be 3 months or more ... the muscle may not retattach like it ws before the injury as there is scaring in the healing process.