( CNN ) -- Shinji Kagawa scored a hat-trick as champions-elect Manchester United crushed Norwich City 4-0 at Old Trafford in the English Premier League on Saturday . It was a 39-year-old Welsh winger that was expected to hog the headlines this weekend but Ryan Giggs , who was due to play his 1,000th game , was left out of Alex Ferguson 's squad . Instead , it was the 23-year-old midfielder from Kobe whose face will be plastered over the back pages of Sunday 's newspapers . The Japan international opened the scoring with a fine volley in first-half stoppage time before grabbing a second , then a third in the 76th and 87th minutes as United finished another game in rousing fashion . Wayne Rooney added a fourth in injury time to complete the rout to send the Red Devils 15 points clear at the top of the table and coasting towards a 20th League title . Rafa Benitez 's week finished in more positive fashion as Chelsea beat West Bromwich Albion at Stamford Bridge -- Demba Ba getting the only goal of the game in the 28th minute . Read : EPL to introduce goal-line technology . The win lifts the Blues to third in the table above Tottenham Hotspur who play Arsenal at White Hart Lane on Sunday . Everton are now two points behind the Gunners after a comfortable 3-1 win over 19th place Reading at Goodison Park . Marouane Fellaini headed home the opener in the 42nd minute before Steven Pienaar doubled the lead in the 59th minute . Belgian striker Kevin Mirallas added a third seven minutes later with Hal Robson-Kanu getting a consolation goal for the visitors six minutes before the end . Luis Suarez also scored a hat-trick on Saturday as Liverpool trounced Wigan 4-0 at the DW Stadium . Stewart Downing gave the Reds the lead in the second minute before the Uruguayan striker took center stage . The treble means Suarez is now the top goalscorer in the Premier League this season with 21 goals . The win lifts Liverpool to 7th in the table . At the foot of the table , Queens Park Rangers closed the gap between themselves and second-from-bottom Reading to three points with a 2-1 win away to Southampton . Third-from-bottom Aston Villa take on Manchester City on Monday . A Jack Collison goal earned West Ham United a vital three points against Stoke City at the Britannia Stadium . The win , their first in three games , lifts them to 12th . There was no post-cup hangover for Swansea City as Michael Laudrup 's League Cup winning side beat Newcastle United 1-0 . The game between Sunderland and Fulham ended in a 2-2 draw .
Manchester United go four points clear at top of English Premier League . Japan midfielder Shinji Kagawa scores hat - trick in 4 - 0 demolition of Norwich City . # ##lo ends turbulent week on a positive note as Chelsea beat West Ham 1 - 0 .