QPR's seemingly unstoppable march towards promotion from the npower Championship continued as they posted a workmanlike 1-0 win over Doncaster at the Keepmoat Stadium.
Hogan Ephraim struck the only goal of the match in the 47th minute as Neil Warnock's men - shorn of the talents of the influential Adel Taarabt due to illness - extended their advantage at the summit over the chasing back.
Nick Barmby snatched Hull a point as Norwich, who now trail QPR by nine points, extended their unbeaten run to eight games. The Canaries took the lead through a Zak Whitbread header in the 27th minute, but Barmby arrived at the near post to level from close range midway through the second half.
Swansea are a point behind Norwich after Fabio Borini bagged a brace on his debut in their 3-2 win over Nottingham Forest while Steve Morison's late goal dented Cardiff's automatic-promotion hopes as Millwall secured a 3-3 draw at The Den.
Sheffield United handed themselves a relegation lifeline with a 2-0 win over promotion-chasing Leeds, Eric Lichaj's second-half own goal and a Bjorn Helge Riise strike securing the points for Micky Adams' men.
Nathan Ellington lashed home a stoppage-time winner to hand Preston their second victory inside five days as they saw off fellow strugglers Coventry 2-1 at Deepdale while Scunthorpe's fight for survival was dealt a blow as fine goals from Carlos Edwards and Jimmy Bullard gave Ipswich a routine 2-0 win at Portman Road.
A late Darren Ambrose penalty salvaged a precious point for Crystal Palace in their 2-2 draw with Derby.
David Nugent's first-half strike gave Portsmouth a 1-0 victory at the Walkers Stadium and seriously dented Leicester's push for a top-six finish.
Mathieu Manset's strike 20 minutes from time earned Reading a 1-0 win over Barnsley, while Burnley's play-off ambitions suffered a blow as they crashed to a 2-0 defeat at Bristol City.
Scott McDonald and Andrew Taylor were on target as Middlesbrough came from behind to beat 10-man Watford 2-1. Danny Graham replied for Watford, who lost Adrian Mariappa to a second bookable offence.