While watching MNF last night I became curious. Maybe someone here can help. Which Running Back has had the most rushing yards in first 5 years in the league? I assumed Chris Johnson probably was not the very best, but was close. I also assumed Emmitt, Barry Sanders, Adrian Peterson and some other obvious ones would be in the conversation. I only looked up a few. The leader so far is Eric Dickerson, but maybe someone has more? E.Dickerson, 8256 E. Smith, 7183 C. Johnson, est 6950-7000 E Campbell, 6995 W. Payton, 6926 B. Sanders, 6789 A. Peterson, 6752 anyone else? If Arian Foster keeps rolling, he'll be up there after next year.