UPDATE 2-Soccer-Chelsea and Liverpool keep United in sight
* Chelsea and Liverpool secure victories to move within four points of Manchester United
* Chelsea win 1-0 at Portsmouth while Liverpool see off Sunderland 2-0
* Arsenal end goal drought with 3-1 victory at West Brom
LONDON, March 3 (Reuters) - Chelsea narrowed Manchester United's lead in the Premier League to four points on Tuesday with a 1-0 victory at Portsmouth while Liverpool also stayed in pursuit with a 2-0 defeat of Sunderland.
Chelsea were unimpressive in torrential rain at Fratton Park and the home side had two glorious opportunities to go ahead before Didier Drogba's fine finish settled the match.
Chelsea have 58 points from 28 games and are ahead of Liverpool on goal difference after David Ngog and Yossi Benayoun struck to give Rafa Benitez's side victory at home to Sunderland.
United have two games in hand on both, starting with their trip to struggling Newcastle United on Wednesday when they will be seeking to stretch their winning run in the league to 11. Continued...
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