Are the days of a running NFL over?SI.com's Andrew Perloff, The MMQB's Jenny Vrentas and former Pro-Bowl FB Tony Richardson discuss the lack of a quality running game in the modern NFL.SI Staff|Share on FacebookShare on XAdd us on SI.com's Andrew Perloff, The MMQB's Jenny Vrentas and former Pro-Bowl FB Tony Richardson discuss the lack of a quality running game in the modern NFL.Published Sep 30, 2013 | Modified Sep 30, 2013SI STAFFShare on FacebookShare on XHome/NFL