Lost in all the hype about his yardage was the fact that Emmitt was extremely durable.
That is at least equally important when it came to his rushing record. Another vital issue is the team they play on. Obviously, they will last longer if the team has a strong O-line as well as a passing game that takes away focus on the RB.
There will always be prolific looking backs coming into the league. They will shine for years. However, at some point their bodies will begin to break down due to their workload.
Which leads me to the most telling stats:
Since 1970, a RB in his 10th season or more had a thousand yard season 20 times.
10 of those seasons were produced by 4 RB's, the only ones to do this multiple times. Only 2 RB's accomplished this 3 times. They are Walter Payton and Emmitt Smith. Smith did this at age 30, 31, and 32.
At age 33 Emmitt got 975 yards. His only injury season was at age 34, he missed 11 games. At age 35 he got 937 yards...the same exact yardage he got his rookie season before reeling off 11 consecutive thousand yard seasons. Emmitt got 937 yards or more in 14 of his 15 seasons.....unreal.
Emmitt Smith doesn't need to be nervous until we all witness another thousand yard rusher in his tenth season with no history of a sustained injury and no sign that he is slowing down.........don't anyone hold their breath.
Peterson might have been able to accomplish it, if it hadn't been for the injuries. Then again, that's the durability factor that made Emmitt so unique.