I'm no Doctor and i reckon it's all about the graft connecting...healing...growing...in that case one would need to take notice of how previous op's have tracked best! I don't want Rance to play this year! He's a GOAT and i would like several more years play out of him not op's on his knee!He's well ahead in terms of muscle mass. The graft itself will weaken at about that point regardless of how well he's tracking.