Just looking at RBs in NFL history in their first four NFL seasons. Gurley is on the edge of becoming the 51st RB to gain 4,000+ rushing yards in his first four seasons. At his current pace he could reach 4,800+ by season's end which would be top 20.
He is already 18th in rushing TDs (38) over first four seasons. Only 7 have ever had 50+ rushing TDs in their first four and all are in the HOF (expect Adrian Peterson who will be). he could be #8.
Of course, the greatest RBs in NFL history in their first four seasons are, without question, are Jim Brown, Dickerson, Earl Campbell, and Terrell Davis.
