United inches away from retaining their title

Manchester United reasserted their authority over the race for the Premier League title with a crucial victory over Portsmouth at Old Trafford.

Wayne Rooney - recalled after injury - put them on their way with a simple finish from Ryan Giggs's cross after nine minutes.

And substitute Michael Carrick wrapped up the win when he fired in an emphatic strike eight minutes from time after Paul Scholes delivered a trademark slide-rule pass on his 600th appearance for United.

Sir Alex Ferguson's side produced a performance that was workmanlike rather than spectacular, but United's only objective was the victory that puts them three points clear of Liverpool with a game in hand.

If there was a disappointment for United, it came in the shape of a missed opportunity to improve their goal difference against a Portsmouth side that rarely troubled keeper Edwin van der Sar.Giggs was denied twice by England keeper David James, and also missed from close range as United dominated for long spells without emphasising their superiority until Carrick struck late on.

Rooney was United's main source of inspiration as they looked to capitalise on Liverpool's failure to beat Arsenal in Tuesday's 4-4 classic at Anfield. And the significance of Rooney's return was emphasised when he enabled United to shake off early lethargy by putting them ahead after nine minutes.Anderson started the move with a raking pass to Giggs on the left flank, and as Pompey appealed in vain for offside, he delivered an inviting cross for Rooney to slide home from point-blank range.

United's second-half display had plunged into mediocrity, but it was Rooney again who almost lifted Old Trafford's spirits when he raced clear into the area, only for James to once again come to Pompey's rescue.Ferguson's decision to replace Anderson with Carrick was something of a surprise, but it produced the required effect as the England midfield man sealed the points and United's return to the top of the league with eight minutes left.

Scholes must take huge credit, with a glorious pass that slid into the path of Carrick, who shot across the defiant figure of James into the bottom corner.

It allowed United to relax and enjoy the closing stages - safe in the knowledge that they are firmly in charge of their own title destiny.