Arsenal are through to the FA Cup quarter-finals after beating Hull City 4-0 at the KC Stadium.

Olivier Giroud and Theo Walcott both scored twice as the Gunners booked a home tie against a fellow Premier League side Watford.

But they did pick a couple of injury worries with Per Mertesacker withdrawn in the first half after a clash of heads, while fellow centre-back Gabriel also came off after the break.

Midfielder Aaron Ramsey was also forced off, having come on as a substitute for the Brazilian.

Giroud gave Arsenal the lead after a terrible mistake by Irish international David Meyler on 40 minutes.

The midfielder's back-pass inside the Hull penalty area went straight into the path of the Arsenal striker who converted the chance from close range.

The Frenchman added a second with 20 minutes to go, before Walcott slotted in two more.