NFL COMBINE STATS can be fascinating. I remember reading last year that Eric Fisher had a 28½-inch vertical, and I sat and stared at my laptop, trying to visualize how an offensive lineman who's 6-foot-7 and more than 300 pounds could jump that high. (Then I stood and tried to test my own vertical, and you don't want to know the rest of that story.) But I have always been skeptical that combine stats are all that meaningful in predicting the future of a potential draft pick. How do you weigh a week of drills against three or four years of a player's work?