Bolton slipped into the Premier League drop zone after a 2-0 defeat at Norwich, as relegation rivals Wolves claimed a crucial 2-1 win at QPR.

Second-half goals from Andrew Surman and Anthony Pilkington ensured the Canaries ended a nervy Saturday afternoon with all three points against Owen Coyle's strugglers at Carrow Road.

The Canaries dominated the first half and should have been well ahead by half-time, but their profligacy, and the Bolton woodwork, left them frustrated.

The game looked set to peter out into a dull goalless draw until Surman volleyed home in the 70th minute and Pilkington wrapped up the win just before the end with an instinctive finish after Bolton goalkeeper Adam Bogdan had parried Russell Martin's drive.

Substitute Kevin Doyle inspired a second-half Wolves comeback at QPR to secure a vital 2-1 victory in west London.

The Ireland international came off the bench at half-time at Loftus Road and helped set up Matt Jarvis' equaliser 51 seconds later, before going on to net the winner.

Their victory was the first in 10 league attempts and helps relieve some of the pressure on under-fire manager Mick McCarthy.

It had looked like QPR boss Mark Hughes would be going home with the three points after debutant Bobby Zamora fired QPR into a deserved lead just days after his move from rivals Fulham.

Wolves were given a way back into the game, though, when fellow striker Djibril Cisse was shown a straight red card for an altercation with Roger Johnson in the 34th minute.

Sunderland's impressive form continued as a strike from James McClean secured them a 1-0 win against 10-man Stoke at a wintry Britannia Stadium.

In a contest during which snow fell throughout, a first half of few goalscoring opportunities finished with Potters defender Robert Huth receiving his marching orders in the 45th minute. The German was shown a straight red card following a tackle on David Meyler.

McClean then netted in the 60th, bursting through the hosts' defence and tucking the ball away to seal a victory which means the Black Cats have now taken 22 points from the 30 on offer since manager Martin O'Neill took charge of the Wearsiders.

Swansea's on-loan midfielder Gylfi Sigurdsson played a major role in Brendan Rogers' side coming from behind to win 2-1 and register only their second away win of the season at West Brom.

The Iceland international, who joined from Hoffenheim last month until the end of the season, cancelled out Marc-Antoine Fortune's opener and laid on the winner for Danny Graham at The Hawthorns.

Wigan benefited from one of the more bizarre goals the league will see this season but had to settle for a 1-1 draw against Everton at the DW Stadium.

It had been a thoroughly forgettable affair until the 76th minute when Phil Neville blocked a Jean Beausejour cross and the ball somehow found its way past Tim Howard for a hugely embarrassing own goal.

But the hosts' lead lasted only seven minutes, substitute Victor Anichebe heading in the equaliser to ensure Everton followed up their win over Manchester City on Tuesday with a point on the road.