Egyptian striker Amr Zaki was watching from the stands as his new team Hull City suffered a 4-0 defeat to Manchester United, thanks to a virtuoso display from Wayne Rooney who scored all goals. Zaki joined Hull from Zamalek on loan until the end of the season for his second spell in the English Premier League. The Bulldozer, who seeks to resurrect his career in England having endured a turbulent period with Wigan Athletic last season despite a promising start, is yet to make his Hull debut as he recovers from a niggling hamstring injury. He was present at Old Trafford as United outclassed Hull on Saturday to move top for the first time since October. England striker Rooney stole the show, opening the scoring after eight minutes on the rebound after Paul Scholes' shot was parried by the keeper into his path. He scored three more goals in the last 10 minutes to give United, who were struggling of late, an emphatic win. A Darron Gibson pass on 82 minutes found Rooney unmarked to fire home from inside the area. He completed his hat-trick after heading in a pinpoint cross from Portuguese winger Nani before notching his fourth goal in stoppage time. United have 50 points from 23 matches, Arsenal have 48 from 22 and Chelsea have 48 from 21. Rooney's four goals