Late goals from Callum Ainley and Chris Porter saw Crewe stage a gripping turnaround to clinch a 3-2 win over Newport.
After the euphoria of their FA Cup giant-killing exploits against Leicester on Sunday, Mike Flynn's side were subdued at Gresty Road for more than an hour, but found themselves 2-1 ahead in the dying minutes.
Crewe had led from the 34th minute when Jordan Bowery blasted a low drive past Joe Day, but Antoine Semenyo and Padraig Amond put the visitors ahead with just 14 minutes to play.
The hosts were offered a way back when Fraser Franks was adjudged to have pushed George Ray at a corner, and Porter sent Day the wrong way from the spot to level the scores before Ainley drove home the stoppage-timer winner.
Crewe had started strongly and could have scored through Ainley, Bowery and Porter, but it was against the run of play tht Newport levelled.
Semenyo latched onto a loose ball and drove past Ben Garratt to make it 1-1, then Amond saw a chip cleared off the line by Nicky Hunt.
He was not to be denied when he turned and fired in amid a melee after Perry Ng and Garratt failed to deal with an aerial ball.
However their perfect week was soured when Porter and Ainley scored in quick succession in a frenzied finish.