Carroll should have extended his team's lead after Danny Guthrie picked him out at the far post with a deft cross but the unmarked striker found the side netting with his header.
Gary Megson's side had earlier seen a header from Helguson sail over and Guthrie shoot wide when unmarked inside the area.
Portsmouth were becoming the more adventurous side and Campbell glanced a header wide while Hreidarsson somehow nodded over from six yards.
Sunderland may have been putting in the work-rate but Chelsea carried the greater threat with their crisp passing and movement, with Michael Essien putting a near post header into the side-netting.
After the former had given the home side the lead, his header provided Fryatt with an opportunity to immediately double the lead but the young forward's shot was saved by Wednesday keeper Lee Grant.
Kenny Deuchar's header increased the home side's lead before Anthony Stokes pulled a goal back for Hibs.
Wigan came back into the game towards the end of the first half and Heskey's header revived the home side's hopes.
Leeds keeper Kasper Schmeichel had to save an Andre Bikey header before the home side made Leeds pay for their earlier misses.
Todd then came close to giving his side the lead, but his header was expertly tipped over by the lightning-quick reflexes of Deeney.
Osman thumped home his header to give his side a lead they might have had much earlier had Louis Saha not blazed over when well placed.
Gerard Houllier, whose Villa side needed an 89th-minute header from James Collins to beat Blackpool, said he would be "very disappointed" if the Seasiders were fined.
New Zealand goalkeeper Michael O'Keefe failed to clear a corner on the stroke of half time, and Baga was left with a simple header to give his side the lead.
But there was nothing the Owls keeper could do to prevent Lee from putting the visiting side in front with a powerful header from six yards when the striker rose unchallenged to meet Ambrose's corner after 24 minutes.
But a late Matt Smith's header earned the League One side a replay.
Glenn Ferguson had a glorious chance to get the home side back in the game but his header went just over the bar.
Two goals from Jonathan de Guzman and one from Ben Davies sealed victory for Michael Laudrup's side before Michael Owen scored a consolation header in injury time.
Ritchie Humphries and Adam Boyd hassled and harassed the Brentford defence and Chris Westwood flashed a header wide as the home side increased the pressure towards the end, but they could not find a way through the Bees defence.
He almost gave the home side the lead after 23 minutes but his header from a Tom Cleverley cross hit the underside of the bar.
But the Chiefs have a game in hand, which will come this Saturday when the Devon side head to Birmingham for a 'double header' against Moseley.
Liverpool looked devoid of ideas and desire, although Birmingham were failing to make their superiority count with Scott Dann seeing a free header bounce over as the Midlands side spurned another chance.
Chris Swailes should have given the home side the lead with a close-range header but Zaluska did well to block with his feet and McLaughlin's header was deflected over from the following corner.
The Hertfordshire side almost won it when Jon Ashton flashed a header wide from a corner.
The home side had a deflected Tom Cairney shot and a header wide by Jan Vennegoor of Hesselink to show for their efforts.
The home side went two goals up through a Luis Gonzalez header and a Diego shot before Peter Petras pulled a goal back in first-half injury time.
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The visiting side made an enterprising start and Helguson saw a header saved by Scott Loach as QPR looked for the early goal that would set them on the way to sealing promotion.
But the closest the First Division side came to a goal was when a powerful header from Alex Notman bounced off the crossbar - but it mattered little, because he was in an offside position.
The game came to life in the final 10 minutes, with Samaras just failing to reach a Stokes cross across the face of goal and a Juarez header striking the face of the Edinburgh side's crossbar.
United became stifled by a staunch City side who extended their lead with a glanced Benjani Mwaruwari header.
Carlos Aranda made amends for a missed penalty in the 24th minute with a header six minutes later to put the home side ahead.
Instead, Ferguson summoned Darron Gibson with the Old Trafford side in firm control against a West Brom side who almost found themselves further behind when a Vidic header came back off the post.
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