Hull City 0-4 Arsenal: Olivier Giroud and Theo Walcott score twice each

Arsenal booked their place in the FA Cup quarter-finals at the second time of asking thanks to a convincing 4-0 fifth-round replay win at Hull.

Olivier Giroud ended his 12-game goal drought with a strike in each half, pouncing on a defensive error from Hull captain David Meyler four minutes before the interval before volleying home Theo Walcott's cross on 71 minutes.

Walcott then got in on the action, expertly converting Joel Campbell's through ball on 77 minutes before he sealed the victory with a fourth, lashing the ball past Eldin Jakupovic courtesy of a deflection off Alex Bruce in the final minute of the game.

Victory for Arsenal sees them set up a home quarter-final tie with Watford and remain on course for a third consecutive FA Cup triumph, but it came at a price, with Per Mertesacker, Gabriel and Aaron Ramsey picking up injuries.

Defeat for Hull, meanwhile, sees them slip out of the FA Cup at the hands of the Gunners for the third season in succession, although they now have the chance to focus on their bid for promotion from the Sky Bet Championship.

Whether Arsenal's injured trio will all be ready for Sunday's hastily-arranged last-eight clash with the Hornets is doubtful - unlike the result on Tuesday, which looked likely after Walcott steered home inside three minutes.

That goal was chalked off for offside but Arsenal continued to threaten, with Campbell curling over early on at subdued KC Stadium.

David Ospina produced a wonderful one-handed save on the half-hour mark to deny Meyler and again threw his body in the way to deny Nick Powell, although the flag already had already been raised by the time Ahmed Elmohamady had struck home.

Mertesacker went off with a facial injury in the 33rd minute as the tie looked to perhaps be turning the hosts' way, only for Meyler's shocking decision five minutes before half-time to put Arsenal on their way.

The Ireland midfielder decided to direct the ball back to Jakupovic - a poor decision capitalised on by Giroud, who rolled a right-footed shot past Hull's back-up goalkeeper.

It left Jakupovic - man of the match as the sides drew 0-0 at the Emirates Stadium - without much hope, as did the Kieran Gibbs effort that quickly followed, rattling the crossbar from 30 yards.

Alex Bruce came close with a header before half-time, but Arsenal returned from the break strongly and Jakupovic needed to be at his best to tip over a dipping Mohamed Elneny volley.

Mohamed Diame threatened in the air at the other end, but the visitors' injury worries worsened when Gabriel signalled to the bench his night was over.

Hull attempted to capitalise on the makeshift centre-back pairing of Calum Chambers and Nacho Monreal, with Powell striking wide and substitute Sone Aluko coming close with a flicked header, but Arsenal soon moved up a gear.

The recently-maligned Walcott first clipped a lovely ball for Giroud to fire home to make it 2-0 and, after the disappointment of seeing substitute Ramsey trudge off and be replaced by Jeff Reine-Adelaide, provider turned scorer in the 77th minute.

Campbell was the architect this time, firing a lovely, low pass that Walcott controlled and turned home with class.

The England forward added another with two minutes remaining, with his deflected near-post strike beating Jakupovic to wrap up a comprehensive victory.