Southampton moved into third thanks to a comfortable 4-1 win over Hull City at St Mary's.
Morgan Schneiderlin opened the scoring with a looping header after Rickie Lambert knocked the ball across goal into his path.
Southampton were then awarded a penalty when Steve Harper brought down Adam Lallana. Lambert drilled his spot kick into the roof of the net to double the lead on the half-hour mark.
Lallana then netted the third with a goal of the season contender, picking the ball up 30 yards from goal and embarking on a mazy run down the left, before cutting inside Ahmed Elmohamady and shooting past Harper into the corner.
Yannick Sagbo pulled one back for the visitors, before Steven Davis completed the rout.
In the evening kick-off, Gary Hooper and Leroy Fer scored their first league goals for Norwich, who recovered from a goal down at West Ham to win 3-1 and leave Upton Park with all three points.
Norwich, who shipped seven at Manchester City last weekend, were behind at the break after Ravel Morrison tapped home following good work from Kevin Nolan.
But when Jussi Jaaskelainen felled Hooper in the area ten minutes into the second half, the former Celtic hitman picked himself up and made no mistake from the spot.
A stunning Robert Snodgrass free-kick put Norwich 2-1 up on 72 minutes - the first time the Canaries have been in front in a match in any competition since beating Stoke on September 29.
And as West Ham pushed for an equaliser, Fer broke clear in injury time and lashed home from the edge of the area to make the points safe.
Aston Villa ended their goal drought and kept their first clean sheet for 16 games as Cardiff City were brought back down to earth with a bump following their all-Welsh victory over neighbours Swansea on Sunday.
Leandro Bacuna scored a spectacular free-kick for the home side's first goal in seven-and-a-half hours of football, before Libor Kozak's header earned Villa a 2-0 victory six minutes from time.
Elsewhere, Crystal Palace held on for a 0-0 draw against Everton at Selhurst Park for their first point in eight matches, but the manager-less Eagles remain rooted to the foot of the Premier League table.
Palace were left to rue a spurned chance by Jerome Thomas, who fired wide when clean through on goal, while Everton defender Phil Jagielka hit hit the crossbar with a header.
At full time, Everton defender Sylvain Distin remonstrated with the club's fans who booed the side off the pitch. Distin remained on the field after his team-mates had left and went over to speak to the visiting contingent.
The Frenchman wrote on Twitter after the incident: "For the record, I was speaking to one single person and he knows who he is as I spoke to him face to face..."
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