Millwall's pace troubled Rams
Cruising to what looked like a comfortable 1-0 victory, Millwall's introduction of Josh Simpson and Marvin Williams changed all that, as Brown admitted.
The Rams boss said it was downhill, after Millwall 'injected pace' into their ranks with the two substitutions.
Win FREE pizza with Vital Football!
Select your team and get 50% off if they score twice.
Register on this site via the drop down menu and leave feedback to this story below or to join in the debates on the forum.
Go on, get vitalled!