Premier League, following Chelsea's 4-0 crush at Bournemouth.
The Gunners' 2-1 prevail upon Cardiff City on Tuesday, guaranteed they remained three behind their London rivals.
Nonetheless, it showed signs of improvement for Unai Emery's men at the Vitality Stadium, on account of Joshua King's prop.
David Brooks and Charlie Daniels likewise jumped on the score sheet, as the Cherries recorded a popular triumph.
In alternate matches played on Wednesday, Crystal Palace were held to a 1-1 draw with Southampton.
Tottenham Hotspur fought against eminent loss to beat Watford 2-1 and Liverpool were held to a 1-1 draw by Leicester City, to build the hole at the best among them and Manchester City to five.