Arsenal's top-four hopes were damaged on Sunday after Unai Emery's side lost 1-0 to Everton in their visit to Goodison Park, their third consecutive game on the road without a win.
Phil Jagielka was drafted into Marco Silva's side as a late replacement for Michael Keane after he fell ill, and the English veteran poked home the breakthrough in a competitive first half on Merseyside.
The Gunners hoped to fire back but were held to their third consecutive away match without tasting victory, while the Toffees have clinched three wins in a row for the first time since October.