Two late goals made Sheffield Wednesday a dramatic win in the pursuit of Leeds United.
The game seemed goalless, but Jacob Murphy defeated goalkeeper Kiko Casilla from a close angle on his near post and Atdhe Nuhiu made Leeds look for a equalizer.
Jack Harrison should have given the hosts a first-half lead but missed the goal when he was well placed while Patrick Bamford was offside.
Bamford missed a good chance to take Leeds into the lead right after the restart, and when the hosts had no chance, the Owls fired a quick counterattack by Murphy in the 87th minute before substitute Nuhiu scored in time to equalize.
The defeat put Leeds back in second place in the league, six points ahead of Brentford, while the Owls fell back to sixth.
The hosts were impressed by their defeat against Arsenal on Monday, but when they were at the Emirates Stadium, they had to pay for their waste in front of the goal.
Since beating Hull on December 10, Marcelo Bielsa's men have won only one of their last six games.
Wednesday had lost its last three league games and got a hit mid-week when top scorer Steven Fletcher was out for ten weeks. However, they remained persistent and took their chance to score three points.
Leeds will travel to the mid-table QPR next Saturday, while the Owls receive Blackburn Rovers on the same day.
Leeds head coach Marcelo Bielsa:
"Of course, this was a match that was very important to make a difference.
"It's a defeat but not a final game. It's a moment that was very important to get a good result."
"We controlled the game and missed a lot of chances, but there are still a lot of games to be played.
"We have to look at the collective role the team played in admitting goals rather than blaming individuals."
Garry Monk, manager of Sheffield Wednesday, told BBC Radio Sheffield:
"Of course we are happy about this result. The league leaders away. It was a difficult game for us."
"I thought they were hit too well and to come here and score a goal in a very difficult game, we have to be very, very happy with the result."
"We were very clinical. I thought we were good value for money in the second half. We really tried to try. It was a bit controversial and we were clinical with our chances."
"I was more satisfied with the courage we showed, the heart we put on the pitch."