Scott Sinclair struck a controversial late penalty to rescue a point for Swansea in a 1-1 draw with Barnsley at Oakwell but it was not enough to prevent south Wales rivals Cardiff reclaiming second place in the npower Championship.
The Bluebirds' incident-packed 4-2 win over Watford and a late victory for Norwich at Sheffield United leaves the three automatic promotion contenders locked together on 47 points behind leaders QPR.
Swansea looked out of sorts at Oakwell and trailed to Bobby Hassell's 14th-minute opener until four minutes from time, when Sinclair was adjudged to have been brought down by goalkeeper Luke Steele in the box, and he fired in the spot-kick.
Cardiff went close to blowing their big chance as they almost threw away a 3-0 lead at home to Watford before a late goal from substitute Gabor Gyepes wrapped up their three points.
Craig Bellamy opened the scoring after 14 minutes and further goals from Michael Chopra and Jay Bothroyd looked to have sealed all the points for the home side against a Watford side looking for seven straight wins.
But the Hornets stirred, with Will Buckley reducing the deficit and Marvin Sordell making it 3-2. Buckley thought he had equalised with a backheel, only for his effort to be ruled out by a linesman, before Gyepes' 83rd-minute strike made it 4-2.
Andrew Crofts scored twice for Norwich in their 2-1 win at Sheffield United which keeps up the pressure on the Welsh pair but also leaves the Blades mired in deep relegation trouble.
Crofts bagged a controversial opener in the 61st minute after home goalkeeper Steve Simonsen appeared to have been impeded at a corner. Ched Evans equalised eight minutes later, only for Crofts to win it 10 minutes from time with a superb volley.
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