Michael Smith’s 15th goal of the season saw Rotherham edge past National League Stockport to take their place in the third round of the FA Cup.
The 1-0 triumph also saw the Millers extend their unbeaten club record run to an 18th game, although they were pushed all the way in a tight contest.
Buoyed by a raucous travelling army of 2,300 supporters, Stockport belied their position 55 places below the table-topping League One hosts during a high-octane display.
Scott Quigley was only denied a fifth goal in this season’s competition when Josh Vickers made a flying save to prevent the former Barrow striker’s 20-yard effort finding his top corner.
But it was the Millers who forged ahead in the 43rd minute as Smith tapped in from three yards following Ollie Rathbone’s left-wing cross.
After the break, the visitors went on to squander an excellent opportunity to secure a replay when skipper Ash Palmer rose unchallenged to meet Ryan Rydel’s free-kick but could only steer his header wide of goal.
Later in the half, substitute Paddy Madden did head into the home net but his far-post effort was ruled out for offside and the relieved Millers avoided a tricky midweek trip across the Pennines.
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