Liverpool won at Arsenal for the first time in 11 years on Saturday, the 2-0 Premier League victory coming from an own goal and Luis Suarez's strike after the hosts had Emmanuel Frimpong sent off.
Aaron Ramsey inadvertently gave Liverpool its opener in the 78th minute when Ignasi Miquel's attempted clearance came off the midfielder's chest and went into the net.
The second came in stoppage time, with Luis Suarez sweeping the ball home after latching onto a cross from fellow substitute Raul Meireles.
Arsenal, which like Liverpool had drawn its opening match last week, was jeered off the Emirates Stadium pitch.
Making matters worse, Arsenal's injury problems mounted with Laurent Koscielny replaced after 15 minutes with a back injury.