Blackburn fought back to draw 1-1 with Nahki Wells and his Huddersfield teammates in the Sky Bet Championship and extend their unbeaten home run to five games.
But they were made to work by a rampant Huddersfield side whose performance belied their recent poor form.
When Kasey Palmer's header put the visitors ahead in the sixth minute with his third goal of the season, they were already in control and only desperate defending and the woodwork prevented further goals.
However, Rovers equalised in the 34th minute from the spot - Danny Graham's shot was their first and only effort on target in the half.
A hat-trick by Scott Kashket inspired League Two Wycombe to a 5-0 hammering of Rai Simons and his League One strugglers Chesterfield teammates in their FA Cup second round tie at the Proact Stadium
Wycombe were better in every department and after Paul Hayes and Kashket gave them a two-goal lead at the interval, Chesterfield collapsed in the second half as Jon Nolan was shown a straight red card.
Second-half goals from Steve Davies and Nathaniel Mendez-Laing ended Reggie Lambe and his Carlisle United's unbeaten home record and sent Rochdale through to the third round of the FA Cup with a 2-0 win.