History Shows RBs over 30 Can Still Run for 1000 Yards; Just Not in Shanahan's History

I was wondering if all the negative feedback the Redskins' current RB situation was getting was warranted. Of course, it's very likely Shanahan will draft a mid-round RB, but it's still worth looking into. In Mike Shanahan's 11 years as Denver's head coach, Mike Anderson was the only rusher over 30 years old to run for 1,000 yards. It should be said that going into that 2005 season, the former Marine had a measly 626 career carries, which is half as many as the lowest RB on the Redskins roster right now. Reuben Droughns was the next oldest RB at 27 to run for 1,000, and going into that 2004 season he had a whopping 40 career carries. Yea, that's not a typo. 40.

There certainly is more to the stats though.

Former Broncos who rushed for 1,000+ yards outside of Denver:  Reuben Droughns ‘05 (CLE),  Portis (WAS) - 4x.

Clinton Portis currently has 2,176 carries.
Larry Johnson currently has 1,421 carries.
Willie Parker currently has 1,253 carries.

Either way, the Redskins don't need a single RB to run for 1,000 yards. Whichever three, including the draft pick, make the squad just need a formidable running game. Clinton certainly has speed left, but OL problems aside, I just can't see these 3 guys giving the production of Shanny's alums. It really makes me think that these 3 RBs are fighting for two spots.

Some other RBs that have run for good yardage over the age of 30:

Thomas Jones had 1949 carries going into last season and put up 1,402 yards (31 years old currently)

John Riggins had 2413 carries going into the 1984 season and ran for 1239 yards and 14 TDs (age of 35).

Edgerrin James had 2525 carries going into the 2007 season for Arizona and ran for 1,222 yards (age of 29).