LONDON (AFP) - Lazar Markovic scored the only goal as improving Liverpool provisionally closed to within four points of the English Premier League's top four by winning 1-0 at Sunderland on Saturday.

At a gusty Stadium of Light, the 20-year-old Serbia winger's ninth-minute strike - his first league goal - enabled Liverpool to extend their unbeaten run to five league games.

Gus Poyet's Sunderland, who had Liam Bridcutt sent off for two bookable offences, remain three points above the relegation zone with only one win from their last 11 games.

Having earlier seen a penalty appeal waved away after tumbling under a challenge from Wes Brown, Markovic put Liverpool ahead when he gathered a pass from Fabio Borini and prodded the ball between Costel Pantilimon's legs.

Markovic then hit the bar with a spectacular, improvised scissors kick as Liverpool dominated, while former Sunderland loanee Borini rounded Pantilimon, only to find the side-netting.

The visitors lost Steven Gerrard at half-time, with Dejan Lovren coming on, but their position was strengthened in the 49th minute when Bridcutt was shown a second yellow card for impeding Emre Can.

Moments later, Adam Johnson left the Liverpool crossbar shuddering with a swerving drive from distance, but Brendan Rodgers's side finished strongly, with Pantilimon saving from Mario Balotelli and Philippe Coutinho.

Co-leaders Chelsea and Manchester City are both in action later on Saturday, with Chelsea hosting managerless Newcastle and City visiting out-of-form Everton.

The two pace-setters were left dead-level on points, goal difference, goals scored and goals conceded after the New Year's Day fixtures.

Tottenham Hotspur can move into the top four if they win at Crystal Palace, with third-place Manchester United and fourth-place Southampton facing off at Old Trafford on Sunday.