Arsenal swept aside off-field protests to move closer to securing a top-four finish with a 1-0 victory over Norwich City.
A drab Emirates clash - which was live on talkSPORT - saw fan demonstrations take place before, on 12 minutes and on 78 minutes, against long-serving manager Arsene Wenger.
Wenger, unmoved by the small minority in the stadium rallying against him, threw on Danny Welbeck in the second half. The former Manchester United forward replaced Alex Iwobi - a decision which was met with boos - and the England international took just three minutes to find the back of the net.
Norwich posed little threat as they end the day second from bottom in the Premier League - and they are running out of time to preserve their top-flight status.
The Gunners are third, eight points clear of fifth-placed West Ham, who have a game in hand.
Norwich started well. Nathan Redmond forced Petr Cech to save after five minutes, after a Martin Olsson cross evaded everyone.
Cameron Jerome blasted over before arguments broke out between Arsenal supporters disputing the future of their club.
"There's only one Arsene Wenger" rang around the Emirates Stadium as the 12th-minute protest took place.
There was indecision off the field and on it, as Arsenal dithered around the Norwich penalty area, failing to fashion any real chances.
A deflected Mohamed Elneny effort resulted in a corner and Laurent Koscielny headed over.
Gary O'Neil had an opportunity on the break, exchanged passes with Redmond, but miscued his shot spectacularly over.
Redmond, Norwich's most lively player, made space for a shot which skipped wide.
Then came Welbeck's introduction, immediately injecting energy, and Arsenal's goal.
Redmond tried to create an equaliser, crossing for substitute Dieumerci Mbokani, but Gabriel - on for the injured Per Mertesacker - timed his intervention brilliantly.
The Germany playmaker then volleyed over before Elneny brought the ball down on his chest and fired with the outside of his boot. Ruddy saved.
The goalkeeper ventured forward in stoppage time, but Norwich's free-kick barely reached him as they suffered another damaging defeat.