Here's a write up of Murray from 2011
Click the link for more opinions from the writer on Murray
http://www.bigblueview.com/2011/3/6/2029198/2011-nfl-draft-prospect-profile-rb-demarco-murray
Positives: Unbelievable athlete, great speed, jumping ability, overall athleticism is off the charts... Extremely quick in the open field, very good footwork and balance... Good short area burst, allows him to beat defenders to the corner... Good vision... Always knows where to go and sees things develop quickly... Exceptional receiving ability, will sometimes line up at wide receiver... Soft hands out of the backfield, versatile threat... Very good route runner... Oklahoma has put out some good runners in the past few years, and prior to his string of injuries, some thought Murray could be as good as Adrian Peterson... Puts up big numbers when healthy, had over 1,800 yards from scrimmage and 20 touchdowns this year... Has the ability to return kicks and punts in the NFL... Has a ton of potential if he keeps himself healthy.
Negatives: Shows too much of the ball when he's running, NFL defenders will rip the ball away from him too often... Has an upright running style that allows him to be knocked off center and has a hard time breaking tackles... Has a hard time getting out of arm tackles, needs to be stronger through the hole... Below-average leg drive, doesn't push the pile, gets driven backwards by larger defenders... Not a good pass blocker, usually goes out for passes on third downs... Tons of injury concerns, his upright running style leaves him vulnerable to a ton of hits, and missed games during each of his first three years at Oklahoma... Likes to break too many runs to the outside, needs to work more between the tackles.