That one play in that KC game was a play I saw most of the season, the hole is there and he is not fast enough to get there before it closes. In this league the hole does not stay open long. Singletary relies more on quickness in space to make yards and runs. The thing that people seem to forget is defences are game planning all out to stop the pass with safeties way off the line and extra DB. Even with an average offensive line your RB should be having some huge games and big games. People look at the 3-4 games to finish the season that Singletary had and I look at the season as a whole , our running game was just not effective enough.
Both Moss & Singletary ran around 4.65 forty yard dashes and that is not fast in this league. I would have no problem maybe trading Beasley to the Giants for Barkley and then resigning McKenzie. Those moves improve offensive team speed at two positions were looking to get faster at without wasting draft capital and then maybe you spend a 4th or 5th pick and speed RB as a development player who can return kicks on ST'S.