Edin Dzeko picked a useful time to score his first goal for Manchester City as the Bosnian's strike prevented Notts County from enjoying the shock of the FA Cup Fourth Round.
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• Jolly: Dzeko pays dividends
• Johnson out for three months
• FA Cup Team of the Week
• Draw: Crawley visit Man Utd
• FA Cup Gallery
• Nasri a doubt for Barca date
• West Ham sign Keane on loan
• Murphy delighted with rout
• Saturday's FA Cup round-up
Neal Bishop put League One Notts County into a shock lead at Meadow Lane, but Dzeko, who cost City £27 million when signing from Wolfsburg, converted a cross from Micah Richards with 11 minutes remaining to ensure a replay at Eastlands after a 1-1 draw.
Arsene Wenger's side grabbed the lead after Nicklas Bendtner latched onto Marouane Chamakh's pass and his strike was deflected into the net by Peter Clarke. But their progress was halted when Samir Nasri hobbled off with a hamstring injury, and Sebastien Squillaci was shown a straight red card after he stepped in to block a goalbound Jack Hunt.
Huddersfield sensed an upset and threw players forward, and were rewarded for their pressure when Alan Lee headed home Anthony Pilkington's corner for his first Huddersfield goal with 25 minutes left on the clock.
The Terriers looked to have earned a replay against the ten men but Fabregas sealed the Gunners' progress with a calm finish from the spot after Bendtner was brought down by Jamie McCombe.
Fulham cruised into the last 16 of the FA Cup with a 4-0 demolition of London rivals Tottenham at Craven Cottage.
The result of the match had been determined by half-time after Fulham had raced into a four-goal advantage by the break. Danny Murphy scored from the spot 11 minutes in after Alan Hutton barged down Clint Dempsey in the box. he Cottagers captain, who signed a new deal with the club on Friday, added a second penalty three minutes later after Michael Dawson was sent off for tugging back Moussa Dembele in the box.
Brede Hangeland stabbed home to make it 3-0 before Dembele rifled home a blistering strike just before half-time to seal the impressive win.
Victor Obinna kept West Ham's FA Cup dreams alive with a superb hat-trick in a thrilling encounter to beat Nottingham Forest 3-2 at Upton Park. Dele Adebola and David McGoldrick scored for the Championship side.
Obinna scored twice in the first half and then slotted home a penalty in the second as the hosts put their Carling Cup semi-final misery behind them and set their sights on another potential route to Wembley, with Burnley next for them.
The former Chelsea defender headed home a Matthew Etherington free-kick with ten minutes remaining. But Wolves spurned a golden chance to earn a replay when Thomas Sorensen saved a poor last-minute penalty from Nenad Milijas.
More to follow