How much has the NFL changed in one decade when it comes to the shelf life of the running back position?
From 2000 to 2007, 13 backs in their 30s rushed for 1,000 yards at least once, and there were 17 1,000-yard seasons in total among backs who were 30 or older.
From 2010 to 2016, only four backs in their 30s hit the 1,000-yard mark at least once, and there were only six 1,000-yard seasons among them.
Willis McGahee had 1,199 rushing yards as a 30-year-old with the Denver Broncos in 2011, Adrian Peterson had 1,485 as a 30-year-old with the Minnesota Vikings in 2015 and the soon-to-be 34-year-old Frank Gore has hit that mark three times in the last four years.