Match ends, Sheffield Wednesday 1, Brighton and Hove Albion 2.
Brighton beat Sheffield Wednesday to claim their first victory at Hillsborough.
The visitors took the lead midway through the first half as Lewis Dunk's ball over the top was brought down by Sam Baldock, who chipped goalkeeper Keiren Westwood.
Anthony Knockaert doubled Brighton's lead from close range.
Gary Hooper fired home to pull one back for the Owls in the fifth minute of stoppage time but Brighton held on.
Baldock gave the Seagulls the lead after 26 minutes and Glenn Murray thought he had made it 2-0 with a volley from 12 yards, only to be flagged offside.
The Owls almost drew level when Tom Lees' header following Ross Wallace's corner was cleared off the line by Oliver Norwood.
Knockaert's fifth Championship goal of the season looked to have ensured a comfortable end to the game for Brighton but, after they failed to clear in their own box, Hooper halved the deficit.
However, it was not enough to deny Brighton a fourth victory in six matches as Wednesday suffered just their second Championship loss in their past seven games.
Sheffield Wednesday head coach Carlos Carvalhal:
"It was a game that was very balanced, like we expected. It was a tactical game, especially in the first half.
"We had a few chances and Brighton had one or two also, so it was very balanced.
"In the second half, I thought we played better, more offensive and we pressed more. In the moments we pressed more, we created more clear chances and they scored in their solitary moment, the second goal."
Brighton manager Chris Hughton:
"I thought it was a good win and we were worthy winners, it's nice to send our supporters home happy.
"I think any away win against what you regard as one of the best teams in the division is always a big result.
"But I thought we deserved it and we should've had another goal, when Glenn Murray 'scored'. I thought it was onside, so that was a little bit of a blow.
"But I think to have a percentage of control, in what was such a big game, is credit to our players."
- 1WestwoodSubstituted forDawsonat 45'minutes
- 36PudilSubstituted forHooperat 58'minutes
- 2BrunoBooked at 51mins
- 22DuffyBooked at 35mins
- 11KnockaertBooked at 74mins
- 9BaldockBooked at 63minsSubstituted forSkalakat 76'minutes
- 17MurraySubstituted forHemedat 89'minutes
- Oliver Langford
- Shots on Target
Second Half ends, Sheffield Wednesday 1, Brighton and Hove Albion 2.
Attempt saved. Fernando Forestieri (Sheffield Wednesday) right footed shot from very close range is saved in the centre of the goal. Assisted by Steven Fletcher.
Goal! Sheffield Wednesday 1, Brighton and Hove Albion 2. Gary Hooper (Sheffield Wednesday) right footed shot from the centre of the box to the top left corner.
Attempt missed. Jack Hunt (Sheffield Wednesday) right footed shot from outside the box misses to the left. Assisted by Gary Hooper with a headed pass.
Foul by Barry Bannan (Sheffield Wednesday).
Jamie Murphy (Brighton and Hove Albion) wins a free kick on the left wing.
Foul by Adam Reach (Sheffield Wednesday).
Anthony Knockaert (Brighton and Hove Albion) wins a free kick in the defensive half.
Corner, Brighton and Hove Albion. Conceded by Glenn Loovens.
Substitution, Brighton and Hove Albion. Tomer Hemed replaces Glenn Murray.
Attempt missed. Adam Reach (Sheffield Wednesday) left footed shot from the left side of the six yard box is too high. Assisted by Gary Hooper with a headed pass.
Attempt blocked. Ross Wallace (Sheffield Wednesday) right footed shot from outside the box is blocked. Assisted by Gary Hooper.
Tom Lees (Sheffield Wednesday) wins a free kick in the defensive half.
Foul by Glenn Murray (Brighton and Hove Albion).
Attempt missed. Tom Lees (Sheffield Wednesday) header from the centre of the box is high and wide to the left. Assisted by Ross Wallace with a cross following a corner.
Corner, Sheffield Wednesday. Conceded by Lewis Dunk.
Attempt blocked. Steven Fletcher (Sheffield Wednesday) left footed shot from the centre of the box is blocked. Assisted by Adam Reach.
Foul by Glenn Loovens (Sheffield Wednesday).
Glenn Murray (Brighton and Hove Albion) wins a free kick in the attacking half.