Leeds suffered a surprise defeat at QPR in the lunchtime kick-off, meaning Brentford would be just three points off the automatic promotion spots with a win.
But Thomas Frank’s men could only manage a goalless draw at the John Smith’s Stadium.
On-loan Liverpool man Rhian Brewster got his first goal for Swansea as he helped them to a 2-1 win over Wigan at the Liberty Stadium. Andre Ayew scored the Swans’ other goal.
The result puts the Welsh side into fifth and firmly in with a shout of promotion.
Elsewhere, there was a shock result at Hillsborough as play-off hopefuls Sheffield Wednesday were put to the sword by Blackburn.
A brace from former Tottenham man Lewis Holtby, strikes from Darragh Lenihan and Sam Gallagher and an own goal by Cameron Dawson sealed a 5-0 triumph for Rovers.
Meanwhile, Millwall’s excellent form under Gary Rowett sees them go on the verge of the play-offs, their latest triumph a 2-0 win at home to Reading.
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The game was overshadowed by an anti-racism announcement being made twice following an incident in the crowd.
Below you can see all the results from Saturday’s action in the second tier.