The Gunners were forced to dig as the Clarets mounted a spirited response, though, and Iwobi was effusive in his praise of his teammates and fans for their attitude in sealing a vital win.
‘’Everyone dug in today & showed our determination to get the three points ... fans were amazing & kept singing till the end,’’ Iwobi tweeted.
The Nigerian who got a starter’s shirt was replaced in the 69th minute by Francis Coquelin.
Arsene Wenger’s men now boast of 47 points from 22 games – a point and two points ahead of Tottenham Hotspur and Liverpool respectively.
They welcome 14th-placed Watford to the Emirates Stadium in their next outing on January 31.