Santi Cazorla and Aaron Ramsey fired Arsenal to an impressive 2-0 win over Liverpool that extended their lead to five points in the English Premier League, while Chelsea also lost ground with a 2-0 loss at Newcastle yesterday.
Arsenal have taken 25 points out of 30 possible this season and are five points clear of Chelsea and Liverpool.
Also, Manchester City crushed Norwich 7-0 to maintain their perfect home record, and Manchester United beat Fulham 3-1, scoring three times in the space of 13 minutes courtesy of goals from Antonio Valencia, Robin van Persie and Wayne Rooney.
In a game involving two of the most exciting teams this season, Arsenal easily came out on top with a display of authority and resilience.
Cazorla broke the deadlock for the Gunners with a volley in the 19th minute, scoring from the rebound after his header hit the post. Aaron Ramsey then beat Liverpool keeper Simon Mignolet with a bolt from 20 yards in the 59th.
"It was a convincing win against a good team which is what we wanted. We responded well to losing in midweek," Arsenal manager Arsene Wenger said, referring to a 2-0 loss against Chelsea in the League Cup.
Chelsea went into their game at St James' Park on the back of a nine-match unbeaten run in all competitions and got off to a good start. But Jose Mourinho's side paid for missed chances as Newcastle secured a first home win in two months with goals from French duo Yoan Gouffran and Loic Remy.
"I don't need to lose a match to be aware of (how competitive the league is)," Mourinho said. "It is something I pass on to my players every game. I know exactly how it is. The race is there for everybody."
Following the Blues' slip-up, City moved up to fourth place, a point behind Chelsea and Liverpool.
United raced into a three-goal lead within the first 22 minutes before Alexander Kacaniklic pulled a goal back for Fulham with a shot that deflected in off Rooney in the 65th.
United were less impressive in the second half after United manager David Moyes made three changes during the interval following a string of injuries. The Red Devils, who have won their last six Premier League meetings with Fulham, stayed eighth in the table, two points behind City.