Match ends, Nottingham Forest 0, Blackpool 1.
Blackpool striker Stephen Dobbie scored an injury-time winner to break down 10-man Nottingham Forest's resistance and end the hosts' unbeaten home record.
Forest winger Djamel Abdoun was sent off after 34 minutes when he fouled Neal Bishop in the penalty area.
However, home goalkeeper Karl Darlow saved Tom Ince's spot-kick and Forest could have gone ahead, but Matt Gilks blocked Chris Cohen's effort.
Dobbie won it in the 91st-minute, firing low into the net from 12 yards.
The victory keeps Blackpool, unbeaten in seven matches, in fourth position in the table, with Paul Ince's side now six points behind leaders Burnley.
For Forest it was their second successive defeat, following a surprise 3-1 loss at struggling Yeovil Town last Saturday, and Billy Davies's team have now won only two of eight league matches, although they remain in the play-offs in sixth place.
Algerian Abdoun had come close to opening the scoring but dragged one effort wide from a tight angle and shot at Gilks, before the winger was dismissed.
Ince, aiming for his third goal in as many matches, had his penalty saved and Darlow also kept out a Dobbie free-kick as Blackpool applied pressure.
Darlow again denied Ince in the second half, but the home goalkeeper was finally beaten as Dobbie finished after good work from substitute Nathan Tyson to snatch a dramatic winning goal.
Nottingham Forest manager Billy Davies:
"I spoke to the referee and the officials, because there were three very big incidents in the game - Henderson's claim for a penalty, the red card and then the Blackpool goal. The officials have agreed that there was contact on Henderson, when he was trying to get a shot on goal.
"I thought it was a penalty. I don't think Henderson was trying to win a penalty, when the ball was coming on to his left foot. There is no doubt that it was a red card for Abdoun. He was a little naive, he should have cleared the ball or given it to the keeper. We are not asking for much. We are just asking for them to do what they have to do."
Blackpool assistant coach Alex Rae:
"We were one of the favourites to go down at the start of the season, so our league position is a credit to the players. We were looking at survival, to begin with, the goal is still to get 51 points then to look at things from there, when we get to that point.
"We had 40 trial players in over the summer, but we got a good group of players in. There are a lot of leaders and winners in there. We did not expect to be in this position. But we know we have a special group of players. We try to make it hard for teams to break us down."
- 24VaughanSubstituted forReidat 84'minutes
- 9HendersonSubstituted forHalfordat 59'minutes
- 12MackieSubstituted forPatersonat 89'minutes
- 39AbdounBooked at 35mins
- 29de Vries
- 2OrrSubstituted forTysonat 69'minutes
- 31Martínez CerveraBooked at 70minsSubstituted forDaviesat 76'minutes
- 19FullerSubstituted forChopraat 77'minutes
- 12BishopBooked at 59mins
- Michael Naylor
- Shots on Target
Second Half ends, Nottingham Forest 0, Blackpool 1.
Neal Bishop (Blackpool) wins a free kick on the right wing.
Foul by Henri Lansbury (Nottingham Forest).
Thomas Ince (Blackpool) hits the bar with a left footed shot from a difficult angle on the left. Assisted by Tyler Blackett.
Offside, Blackpool. Thomas Ince tries a through ball, but Steve Davies is caught offside.
Goal! Nottingham Forest 0, Blackpool 1. Stephen Dobbie (Blackpool) right footed shot from the centre of the box to the bottom left corner. Assisted by Nathan Tyson.
Substitution, Nottingham Forest. Jamie Paterson replaces Jamie Mackie.
Attempt missed. Thomas Ince (Blackpool) left footed shot from the centre of the box is close, but misses to the right.
Attempt missed. Jamie Mackie (Nottingham Forest) left footed shot from outside the box is high and wide to the left.
Substitution, Nottingham Forest. Andy Reid replaces David Vaughan.
Corner, Blackpool. Conceded by Jamaal Lascelles.
Attempt blocked. Stephen Dobbie (Blackpool) right footed shot from outside the box is blocked.
Thomas Ince (Blackpool) wins a free kick in the attacking half.
Foul by Chris Cohen (Nottingham Forest).
Hand ball by Greg Halford (Nottingham Forest).
Substitution, Blackpool. Michael Chopra replaces Ricardo Fuller.
Substitution, Blackpool. Steve Davies replaces Ángel.
Ángel (Blackpool) wins a free kick in the defensive half.
Foul by Chris Cohen (Nottingham Forest).