Adrian Peterson rushed for 607 yards in his first five games making him second all time behind Eric Dickerson. (Photo by Jonathan Daniel/Getty Images)

Hall of Fame running back Eric Dickerson rushed for 645 yards in his first five games. Photo by NFL/WireImage.com

Detroit Lions running back Billy Sims rushed for 560 yards in his first five games. Photo by NFL/WireImage.com

Dallas Cowboys running back Julius Jones rushed for 533 yards in his first five games. Photo by Allen Kee/WireImage.com

Houston Oilers Hall of Fame running back Earl Campbell rushed for 503 yards in his first five games. Photo by Thomas Croke/WireImage.com

LaDainian Tomlinson rushed for 486 yards in his first five games. (Photo by Doug Pensinger/Getty Images)

George Rogers rushed 490 yards in his first five games. Photo by Rick Stewart /Allsport