Match ends, Rochdale 0, Scunthorpe United 4.
Scunthorpe inflicted a heavy defeat on nine-man Rochdale, who missed the chance to go top of League Two.
The game was goalless at half-time but Niall Canavan's close-range effort set the Iron on the way to victory.
Dale captain Oliver Lancashire was sent off for two bookable offences and Sam Winnall scored from the spot, after Jack O'Connell had been dismissed for bringing down Jimmy Spencer in the box.
Spencer and David Syres struck late on to complete a memorable away win.
Scunthorpe have won both games since Brian Laws was sacked and Russ Wilcox was placed in temporary charge.
VIEW FROM THE DRESSING ROOM
Rochdale manager Keith Hill told BBC Radio Manchester:
"The first half was a really good performance. I don't want to talk too much about the second half and the way the game ended.
"We weren't given the opportunity to reflect our capabilities.
"That's not the players' fault or to their detriment. We haven't been thrashed at home - we've been denied an opportunity."
- 8TutteBooked at 45minsSubstituted forHéryat 58'minutes
- 22O'ConnellBooked at 74mins
- 6LancashireBooked at 69mins
- 12LundSubstituted forMolyneuxat 77'minutes
- 29CumminsSubstituted forDoneat 59'minutes
- 3DawsonSubstituted forNolanat 30'minutes
- 8BurtonSubstituted forSpencerat 65'minutes
- 16AdelakunSubstituted forNoble-Lazarusat 83'minutes
- Tony Harrington
- Shots on Target
Second Half ends, Rochdale 0, Scunthorpe United 4.
Foul by Michael Rose (Rochdale).
James Spencer (Scunthorpe United) wins a free kick in the defensive half.
Goal! Rochdale 0, Scunthorpe United 4. David Syers (Scunthorpe United) right footed shot from the centre of the box to the bottom right corner.
Corner, Rochdale. Conceded by Christian Ribeiro.
Goal! Rochdale 0, Scunthorpe United 3. James Spencer (Scunthorpe United) right footed shot from the centre of the box to the bottom right corner.
Substitution, Scunthorpe United. Reuben Noble-Lazarus replaces Hakeeb Adelakun.
Attempt missed. Christian Ribeiro (Scunthorpe United) right footed shot from outside the box misses to the left.
Ashley Eastham (Rochdale) wins a free kick in the attacking half.
Foul by James Spencer (Scunthorpe United).
Attempt saved. Michael Rose (Rochdale) right footed shot from outside the box is saved in the centre of the goal.
Substitution, Rochdale. Lee Molyneux replaces Matthew Lund.
Goal! Rochdale 0, Scunthorpe United 2. Sam Winnall (Scunthorpe United) converts the penalty with a right footed shot to the bottom right corner.
Jack O'Connell (Rochdale) is shown the red card for fighting.
Penalty conceded by Jack O'Connell (Rochdale) after a foul in the penalty area.
Penalty Scunthorpe United. James Spencer draws a foul in the penalty area.
Jack O'Connell (Rochdale) wins a free kick in the defensive half.
Foul by Terry Hawkridge (Scunthorpe United).
Second yellow card to Oliver Lancashire (Rochdale).