Olivier Giroud scrambled a late winner as Arsenal came from behind to survive an FA Cup scare with a 2-1 win at Preston North End.
The Gunners were fortunate not to trail by more than Callum Robinson's early strike at halftime after being run ragged by the fired-up hosts at Deepdale.
Aaron Ramsey equalised soon after the restart and Arsene Wenger's side, much improved in the second half, snatched victory when Giroud claimed his fourth goal in four games, in the 89th minute.
The result meant Wenger maintained his proud record of having never lost a third-round tie, but not without a huge sigh of relief.
The cup winners of 2014 and 2015 opted to rest the likes of Alexis Sanchez, Petr Cech, Laurent Koscielny and Hector Bellerin, while Mesut Ozil was not fit to return.