Arsenal boosted their top-four hopes with a 4-1 victory over Fulham at Emirates Stadium.
After Ryan Sessegnon had missed two good chances to put Fulham ahead, Arsenal led through Granit Xhaka, who converted Alex Iwobi's cross.
Ten minutes after the break Sead Kolasinac crossed to Alexandre Lacazette, who fired in to make it 2-0.
Fulham pulled a goal back when substitute Aboubakar Kamara sidefooted in Sessegnon's cross.
But another substitute, Aaron Ramsey, restored Arsenal's two-goal lead before Pierre-Emerick Aubameyang sealed victory with a deflected strike, his 14th PL goal of the season.
A first win in three means Arsenal are fifth on 41 points, two behind Chelsea. Fulham remain 19th on 14 points.
Arsenal: 12 Jan v West Ham (A)
Fulham: 12 Jan v Burnley (A)