Arsenal suffered their second home defeat by a promoted side this season when they were beaten 1-0 by a Newcastle United team who climbed into the Premier League's top four on the back of their victory on Sunday.
Andy Carroll headed the only goal at the end of the first half to give Newcastle their third successive win.
Arsenal were upset 3-2 at The Emirates by West Bromwich Albion in September and, although they had most of the possession and hit the bar twice on Sunday, they lacked the killer instinct against a team they last lost at home to nine years ago.
Liverpool were leading league leaders Chelsea 2-0 at Anfield at the time of this issue going to print. Fernando Torres scored a brace.
Injuries for inter as Eto'o grabs draw
Milan: Lazio goalkeeper Fernando Muslera watched in horror as Marco Borriello's weak penalty crept under his body and dribbled into the net to help city rivals AS Roma to a 2-0 win over the Serie A leaders on Sunday.
Mirko Vucinic added another second-half spotkick late on to seal a traditionally explosive derby which started off surprisingly subdued but burst into life after the break.
Lazio's first league defeat since the opening day meant second-placed AC Milan cut the gap at the top to two points and leapfrogged Inter Milan with a 3-2 win at bottom side Bari.
Champions Inter drew 1-1 at home with Brescia on Saturday.
Juventus and Napoli are just a point behind third-placed Inter after 10 games following home victories over Cesena and Parma.